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Based on kernel version 3.15.4. Page generated on 2014-07-07 09:00 EST.

1	
2			    LINUX ALLOCATED DEVICES (2.6+ version)
3	
4		     Maintained by Alan Cox <device@lanana.org>
5	
6			      Last revised: 6th April 2009
7	
8	This list is the Linux Device List, the official registry of allocated
9	device numbers and /dev directory nodes for the Linux operating
10	system.
11	
12	The latest version of this list is available from
13	http://www.lanana.org/docs/device-list/ or
14	ftp://ftp.kernel.org/pub/linux/docs/device-list/.  This version may be
15	newer than the one distributed with the Linux kernel.
16	
17	The LaTeX version of this document is no longer maintained.
18	
19	This document is included by reference into the Filesystem Hierarchy
20	Standard (FHS).	 The FHS is available from http://www.pathname.com/fhs/.
21	
22	Allocations marked (68k/Amiga) apply to Linux/68k on the Amiga
23	platform only.	Allocations marked (68k/Atari) apply to Linux/68k on
24	the Atari platform only.
25	
26	The symbol {2.6} means the allocation is obsolete and scheduled for
27	removal once kernel version 2.6 (or equivalent) is released. Some of these
28	allocations have already been removed.
29	
30	This document is in the public domain.	The author requests, however,
31	that semantically altered versions are not distributed without
32	permission of the author, assuming the author can be contacted without
33	an unreasonable effort.
34	
35	In particular, please don't sent patches for this list to Linus, at
36	least not without contacting me first.
37	
38	I do not have any information about these devices beyond what appears
39	on this list.  Any such information requests will be deleted without
40	reply.
41	
42	
43		  **** DEVICE DRIVERS AUTHORS PLEASE READ THIS ****
44	
45	To have a major number allocated, or a minor number in situations
46	where that applies (e.g. busmice), please contact me with the
47	appropriate device information.	 Also, if you have additional
48	information regarding any of the devices listed below, or if I have
49	made a mistake, I would greatly appreciate a note.
50	
51	I do, however, make a few requests about the nature of your report.
52	This is necessary for me to be able to keep this list up to date and
53	correct in a timely manner.  First of all, *please* send it to the
54	correct address... <device@lanana.org>.  I receive hundreds of email
55	messages a day, so mail sent to other addresses may very well get lost
56	in the avalanche.  Please put in a descriptive subject, so I can find
57	your mail again should I need to.  Too many people send me email
58	saying just "device number request" in the subject.
59	
60	Second, please include a description of the device *in the same format
61	as this list*.	The reason for this is that it is the only way I have
62	found to ensure I have all the requisite information to publish your
63	device and avoid conflicts.
64	
65	Third, please don't assume that the distributed version of the list is
66	up to date.  Due to the number of registrations I have to maintain it
67	in "batch mode", so there is likely additional registrations that
68	haven't been listed yet.
69	
70	Fourth, remember that Linux now has extensive support for dynamic allocation
71	of device numbering and can use sysfs and udev to handle the naming needs.
72	There are still some exceptions in the serial and boot device area. Before
73	asking for a device number make sure you actually need one.
74	
75	Finally, sometimes I have to play "namespace police."  Please don't be
76	offended.  I often get submissions for /dev names that would be bound
77	to cause conflicts down the road.  I am trying to avoid getting in a
78	situation where we would have to suffer an incompatible forward
79	change.  Therefore, please consult with me *before* you make your
80	device names and numbers in any way public, at least to the point
81	where it would be at all difficult to get them changed.
82	
83	Your cooperation is appreciated.
84	
85	
86	  0		Unnamed devices (e.g. non-device mounts)
87			  0 = reserved as null device number
88			See block major 144, 145, 146 for expansion areas.
89	
90	  1 char	Memory devices
91			  1 = /dev/mem		Physical memory access
92			  2 = /dev/kmem		Kernel virtual memory access
93			  3 = /dev/null		Null device
94			  4 = /dev/port		I/O port access
95			  5 = /dev/zero		Null byte source
96			  6 = /dev/core		OBSOLETE - replaced by /proc/kcore
97			  7 = /dev/full		Returns ENOSPC on write
98			  8 = /dev/random	Nondeterministic random number gen.
99			  9 = /dev/urandom	Faster, less secure random number gen.
100			 10 = /dev/aio		Asynchronous I/O notification interface
101			 11 = /dev/kmsg		Writes to this come out as printk's, reads
102						export the buffered printk records.
103			 12 = /dev/oldmem	OBSOLETE - replaced by /proc/vmcore
104	
105	  1 block	RAM disk
106			  0 = /dev/ram0		First RAM disk
107			  1 = /dev/ram1		Second RAM disk
108			    ...
109			250 = /dev/initrd	Initial RAM disk
110	
111			Older kernels had /dev/ramdisk (1, 1) here.
112			/dev/initrd refers to a RAM disk which was preloaded
113			by the boot loader; newer kernels use /dev/ram0 for
114			the initrd.
115	
116	  2 char	Pseudo-TTY masters
117			  0 = /dev/ptyp0	First PTY master
118			  1 = /dev/ptyp1	Second PTY master
119			    ...
120			255 = /dev/ptyef	256th PTY master
121	
122			Pseudo-tty's are named as follows:
123			* Masters are "pty", slaves are "tty";
124			* the fourth letter is one of pqrstuvwxyzabcde indicating
125			  the 1st through 16th series of 16 pseudo-ttys each, and
126			* the fifth letter is one of 0123456789abcdef indicating
127			  the position within the series.
128	
129			These are the old-style (BSD) PTY devices; Unix98
130			devices are on major 128 and above and use the PTY
131			master multiplex (/dev/ptmx) to acquire a PTY on
132			demand.
133	
134	  2 block	Floppy disks
135			  0 = /dev/fd0		Controller 0, drive 0, autodetect
136			  1 = /dev/fd1		Controller 0, drive 1, autodetect
137			  2 = /dev/fd2		Controller 0, drive 2, autodetect
138			  3 = /dev/fd3		Controller 0, drive 3, autodetect
139			128 = /dev/fd4		Controller 1, drive 0, autodetect
140			129 = /dev/fd5		Controller 1, drive 1, autodetect
141			130 = /dev/fd6		Controller 1, drive 2, autodetect
142			131 = /dev/fd7		Controller 1, drive 3, autodetect
143	
144			To specify format, add to the autodetect device number:
145			  0 = /dev/fd?		Autodetect format
146			  4 = /dev/fd?d360	5.25"  360K in a 360K  drive(1)
147			 20 = /dev/fd?h360	5.25"  360K in a 1200K drive(1)
148			 48 = /dev/fd?h410	5.25"  410K in a 1200K drive
149			 64 = /dev/fd?h420	5.25"  420K in a 1200K drive
150			 24 = /dev/fd?h720	5.25"  720K in a 1200K drive
151			 80 = /dev/fd?h880	5.25"  880K in a 1200K drive(1)
152			  8 = /dev/fd?h1200	5.25" 1200K in a 1200K drive(1)
153			 40 = /dev/fd?h1440	5.25" 1440K in a 1200K drive(1)
154			 56 = /dev/fd?h1476	5.25" 1476K in a 1200K drive
155			 72 = /dev/fd?h1494	5.25" 1494K in a 1200K drive
156			 92 = /dev/fd?h1600	5.25" 1600K in a 1200K drive(1)
157	
158			 12 = /dev/fd?u360	3.5"   360K Double Density(2)
159			 16 = /dev/fd?u720	3.5"   720K Double Density(1)
160			120 = /dev/fd?u800	3.5"   800K Double Density(2)
161			 52 = /dev/fd?u820	3.5"   820K Double Density
162			 68 = /dev/fd?u830	3.5"   830K Double Density
163			 84 = /dev/fd?u1040	3.5"  1040K Double Density(1)
164			 88 = /dev/fd?u1120	3.5"  1120K Double Density(1)
165			 28 = /dev/fd?u1440	3.5"  1440K High Density(1)
166			124 = /dev/fd?u1600	3.5"  1600K High Density(1)
167			 44 = /dev/fd?u1680	3.5"  1680K High Density(3)
168			 60 = /dev/fd?u1722	3.5"  1722K High Density
169			 76 = /dev/fd?u1743	3.5"  1743K High Density
170			 96 = /dev/fd?u1760	3.5"  1760K High Density
171			116 = /dev/fd?u1840	3.5"  1840K High Density(3)
172			100 = /dev/fd?u1920	3.5"  1920K High Density(1)
173			 32 = /dev/fd?u2880	3.5"  2880K Extra Density(1)
174			104 = /dev/fd?u3200	3.5"  3200K Extra Density
175			108 = /dev/fd?u3520	3.5"  3520K Extra Density
176			112 = /dev/fd?u3840	3.5"  3840K Extra Density(1)
177	
178			 36 = /dev/fd?CompaQ	Compaq 2880K drive; obsolete?
179	
180			(1) Autodetectable format
181			(2) Autodetectable format in a Double Density (720K) drive only
182			(3) Autodetectable format in a High Density (1440K) drive only
183	
184			NOTE: The letter in the device name (d, q, h or u)
185			signifies the type of drive: 5.25" Double Density (d),
186			5.25" Quad Density (q), 5.25" High Density (h) or 3.5"
187			(any model, u).	 The use of the capital letters D, H
188			and E for the 3.5" models have been deprecated, since
189			the drive type is insignificant for these devices.
190	
191	  3 char	Pseudo-TTY slaves
192			  0 = /dev/ttyp0	First PTY slave
193			  1 = /dev/ttyp1	Second PTY slave
194			    ...
195			255 = /dev/ttyef	256th PTY slave
196	
197			These are the old-style (BSD) PTY devices; Unix98
198			devices are on major 136 and above.
199	
200	  3 block	First MFM, RLL and IDE hard disk/CD-ROM interface
201			  0 = /dev/hda		Master: whole disk (or CD-ROM)
202			 64 = /dev/hdb		Slave: whole disk (or CD-ROM)
203	
204			For partitions, add to the whole disk device number:
205			  0 = /dev/hd?		Whole disk
206			  1 = /dev/hd?1		First partition
207			  2 = /dev/hd?2		Second partition
208			    ...
209			 63 = /dev/hd?63	63rd partition
210	
211			For Linux/i386, partitions 1-4 are the primary
212			partitions, and 5 and above are logical partitions.
213			Other versions of Linux use partitioning schemes
214			appropriate to their respective architectures.
215	
216	  4 char	TTY devices
217			  0 = /dev/tty0		Current virtual console
218	
219			  1 = /dev/tty1		First virtual console
220			    ...
221			 63 = /dev/tty63	63rd virtual console
222			 64 = /dev/ttyS0	First UART serial port
223			    ...
224			255 = /dev/ttyS191	192nd UART serial port
225	
226			UART serial ports refer to 8250/16450/16550 series devices.
227	
228			Older versions of the Linux kernel used this major
229			number for BSD PTY devices.  As of Linux 2.1.115, this
230			is no longer supported.	 Use major numbers 2 and 3.
231	
232	  4 block	Aliases for dynamically allocated major devices to be used
233			when its not possible to create the real device nodes
234			because the root filesystem is mounted read-only.
235	
236	                  0 = /dev/root
237	
238	  5 char	Alternate TTY devices
239			  0 = /dev/tty		Current TTY device
240			  1 = /dev/console	System console
241			  2 = /dev/ptmx		PTY master multiplex
242			  3 = /dev/ttyprintk	User messages via printk TTY device
243			 64 = /dev/cua0		Callout device for ttyS0
244			    ...
245			255 = /dev/cua191	Callout device for ttyS191
246	
247			(5,1) is /dev/console starting with Linux 2.1.71.  See
248			the section on terminal devices for more information
249			on /dev/console.
250	
251	  6 char	Parallel printer devices
252			  0 = /dev/lp0		Parallel printer on parport0
253			  1 = /dev/lp1		Parallel printer on parport1
254			    ...
255	
256			Current Linux kernels no longer have a fixed mapping
257			between parallel ports and I/O addresses.  Instead,
258			they are redirected through the parport multiplex layer.
259	
260	  7 char	Virtual console capture devices
261			  0 = /dev/vcs		Current vc text contents
262			  1 = /dev/vcs1		tty1 text contents
263			    ...
264			 63 = /dev/vcs63	tty63 text contents
265			128 = /dev/vcsa		Current vc text/attribute contents
266			129 = /dev/vcsa1	tty1 text/attribute contents
267			    ...
268			191 = /dev/vcsa63	tty63 text/attribute contents
269	
270			NOTE: These devices permit both read and write access.
271	
272	  7 block	Loopback devices
273			  0 = /dev/loop0	First loop device
274			  1 = /dev/loop1	Second loop device
275			    ...
276	
277			The loop devices are used to mount filesystems not
278			associated with block devices.	The binding to the
279			loop devices is handled by mount(8) or losetup(8).
280	
281	  8 block	SCSI disk devices (0-15)
282			  0 = /dev/sda		First SCSI disk whole disk
283			 16 = /dev/sdb		Second SCSI disk whole disk
284			 32 = /dev/sdc		Third SCSI disk whole disk
285			    ...
286			240 = /dev/sdp		Sixteenth SCSI disk whole disk
287	
288			Partitions are handled in the same way as for IDE
289			disks (see major number 3) except that the limit on
290			partitions is 15.
291	
292	  9 char	SCSI tape devices
293			  0 = /dev/st0		First SCSI tape, mode 0
294			  1 = /dev/st1		Second SCSI tape, mode 0
295			    ...
296			 32 = /dev/st0l		First SCSI tape, mode 1
297			 33 = /dev/st1l		Second SCSI tape, mode 1
298			    ...
299			 64 = /dev/st0m		First SCSI tape, mode 2
300			 65 = /dev/st1m		Second SCSI tape, mode 2
301			    ...
302			 96 = /dev/st0a		First SCSI tape, mode 3
303			 97 = /dev/st1a		Second SCSI tape, mode 3
304			      ...
305			128 = /dev/nst0		First SCSI tape, mode 0, no rewind
306			129 = /dev/nst1		Second SCSI tape, mode 0, no rewind
307			    ...
308			160 = /dev/nst0l	First SCSI tape, mode 1, no rewind
309			161 = /dev/nst1l	Second SCSI tape, mode 1, no rewind
310			    ...
311			192 = /dev/nst0m	First SCSI tape, mode 2, no rewind
312			193 = /dev/nst1m	Second SCSI tape, mode 2, no rewind
313			    ...
314			224 = /dev/nst0a	First SCSI tape, mode 3, no rewind
315			225 = /dev/nst1a	Second SCSI tape, mode 3, no rewind
316			    ...
317	
318			"No rewind" refers to the omission of the default
319			automatic rewind on device close.  The MTREW or MTOFFL
320			ioctl()'s can be used to rewind the tape regardless of
321			the device used to access it.
322	
323	  9 block	Metadisk (RAID) devices
324			  0 = /dev/md0		First metadisk group
325			  1 = /dev/md1		Second metadisk group
326			    ...
327	
328			The metadisk driver is used to span a
329			filesystem across multiple physical disks.
330	
331	 10 char	Non-serial mice, misc features
332			  0 = /dev/logibm	Logitech bus mouse
333			  1 = /dev/psaux	PS/2-style mouse port
334			  2 = /dev/inportbm	Microsoft Inport bus mouse
335			  3 = /dev/atibm	ATI XL bus mouse
336			  4 = /dev/jbm		J-mouse
337			  4 = /dev/amigamouse	Amiga mouse (68k/Amiga)
338			  5 = /dev/atarimouse	Atari mouse
339			  6 = /dev/sunmouse	Sun mouse
340			  7 = /dev/amigamouse1	Second Amiga mouse
341			  8 = /dev/smouse	Simple serial mouse driver
342			  9 = /dev/pc110pad	IBM PC-110 digitizer pad
343			 10 = /dev/adbmouse	Apple Desktop Bus mouse
344			 11 = /dev/vrtpanel	Vr41xx embedded touch panel
345			 13 = /dev/vpcmouse	Connectix Virtual PC Mouse
346			 14 = /dev/touchscreen/ucb1x00  UCB 1x00 touchscreen
347			 15 = /dev/touchscreen/mk712	MK712 touchscreen
348			128 = /dev/beep		Fancy beep device
349			129 =
350			130 = /dev/watchdog	Watchdog timer port
351			131 = /dev/temperature	Machine internal temperature
352			132 = /dev/hwtrap	Hardware fault trap
353			133 = /dev/exttrp	External device trap
354			134 = /dev/apm_bios	Advanced Power Management BIOS
355			135 = /dev/rtc		Real Time Clock
356			137 = /dev/vhci		Bluetooth virtual HCI driver
357			139 = /dev/openprom	SPARC OpenBoot PROM
358			140 = /dev/relay8	Berkshire Products Octal relay card
359			141 = /dev/relay16	Berkshire Products ISO-16 relay card
360			142 =
361			143 = /dev/pciconf	PCI configuration space
362			144 = /dev/nvram	Non-volatile configuration RAM
363			145 = /dev/hfmodem	Soundcard shortwave modem control
364			146 = /dev/graphics	Linux/SGI graphics device
365			147 = /dev/opengl	Linux/SGI OpenGL pipe
366			148 = /dev/gfx		Linux/SGI graphics effects device
367			149 = /dev/input/mouse	Linux/SGI Irix emulation mouse
368			150 = /dev/input/keyboard Linux/SGI Irix emulation keyboard
369			151 = /dev/led		Front panel LEDs
370			152 = /dev/kpoll	Kernel Poll Driver
371			153 = /dev/mergemem	Memory merge device
372			154 = /dev/pmu		Macintosh PowerBook power manager
373			155 = /dev/isictl	MultiTech ISICom serial control
374			156 = /dev/lcd		Front panel LCD display
375			157 = /dev/ac		Applicom Intl Profibus card
376			158 = /dev/nwbutton	Netwinder external button
377			159 = /dev/nwdebug	Netwinder debug interface
378			160 = /dev/nwflash	Netwinder flash memory
379			161 = /dev/userdma	User-space DMA access
380			162 = /dev/smbus	System Management Bus
381			163 = /dev/lik		Logitech Internet Keyboard
382			164 = /dev/ipmo		Intel Intelligent Platform Management
383			165 = /dev/vmmon	VMware virtual machine monitor
384			166 = /dev/i2o/ctl	I2O configuration manager
385			167 = /dev/specialix_sxctl Specialix serial control
386			168 = /dev/tcldrv	Technology Concepts serial control
387			169 = /dev/specialix_rioctl Specialix RIO serial control
388			170 = /dev/thinkpad/thinkpad	IBM Thinkpad devices
389			171 = /dev/srripc	QNX4 API IPC manager
390			172 = /dev/usemaclone	Semaphore clone device
391			173 = /dev/ipmikcs	Intelligent Platform Management
392			174 = /dev/uctrl	SPARCbook 3 microcontroller
393			175 = /dev/agpgart	AGP Graphics Address Remapping Table
394			176 = /dev/gtrsc	Gorgy Timing radio clock
395			177 = /dev/cbm		Serial CBM bus
396			178 = /dev/jsflash	JavaStation OS flash SIMM
397			179 = /dev/xsvc		High-speed shared-mem/semaphore service
398			180 = /dev/vrbuttons	Vr41xx button input device
399			181 = /dev/toshiba	Toshiba laptop SMM support
400			182 = /dev/perfctr	Performance-monitoring counters
401			183 = /dev/hwrng	Generic random number generator
402			184 = /dev/cpu/microcode CPU microcode update interface
403			186 = /dev/atomicps	Atomic shapshot of process state data
404			187 = /dev/irnet	IrNET device
405			188 = /dev/smbusbios	SMBus BIOS
406			189 = /dev/ussp_ctl	User space serial port control
407			190 = /dev/crash	Mission Critical Linux crash dump facility
408			191 = /dev/pcl181	<information missing>
409			192 = /dev/nas_xbus	NAS xbus LCD/buttons access
410			193 = /dev/d7s		SPARC 7-segment display
411			194 = /dev/zkshim	Zero-Knowledge network shim control
412			195 = /dev/elographics/e2201	Elographics touchscreen E271-2201
413			196 = /dev/vfio/vfio	VFIO userspace driver interface
414			197 = /dev/pxa3xx-gcu	PXA3xx graphics controller unit driver
415			198 = /dev/sexec	Signed executable interface
416			199 = /dev/scanners/cuecat :CueCat barcode scanner
417			200 = /dev/net/tun	TAP/TUN network device
418			201 = /dev/button/gulpb	Transmeta GULP-B buttons
419			202 = /dev/emd/ctl	Enhanced Metadisk RAID (EMD) control
420			203 = /dev/cuse		Cuse (character device in user-space)
421			204 = /dev/video/em8300		EM8300 DVD decoder control
422			205 = /dev/video/em8300_mv	EM8300 DVD decoder video
423			206 = /dev/video/em8300_ma	EM8300 DVD decoder audio
424			207 = /dev/video/em8300_sp	EM8300 DVD decoder subpicture
425			208 = /dev/compaq/cpqphpc	Compaq PCI Hot Plug Controller
426			209 = /dev/compaq/cpqrid	Compaq Remote Insight Driver
427			210 = /dev/impi/bt	IMPI coprocessor block transfer
428			211 = /dev/impi/smic	IMPI coprocessor stream interface
429			212 = /dev/watchdogs/0	First watchdog device
430			213 = /dev/watchdogs/1	Second watchdog device
431			214 = /dev/watchdogs/2	Third watchdog device
432			215 = /dev/watchdogs/3	Fourth watchdog device
433			216 = /dev/fujitsu/apanel	Fujitsu/Siemens application panel
434			217 = /dev/ni/natmotn		National Instruments Motion
435			218 = /dev/kchuid	Inter-process chuid control
436			219 = /dev/modems/mwave	MWave modem firmware upload
437			220 = /dev/mptctl	Message passing technology (MPT) control
438			221 = /dev/mvista/hssdsi	Montavista PICMG hot swap system driver
439			222 = /dev/mvista/hasi		Montavista PICMG high availability
440			223 = /dev/input/uinput		User level driver support for input
441			224 = /dev/tpm		TCPA TPM driver
442			225 = /dev/pps		Pulse Per Second driver
443			226 = /dev/systrace	Systrace device
444			227 = /dev/mcelog	X86_64 Machine Check Exception driver
445			228 = /dev/hpet		HPET driver
446			229 = /dev/fuse		Fuse (virtual filesystem in user-space)
447			230 = /dev/midishare	MidiShare driver
448			231 = /dev/snapshot	System memory snapshot device
449			232 = /dev/kvm		Kernel-based virtual machine (hardware virtualization extensions)
450			233 = /dev/kmview	View-OS A process with a view
451			234 = /dev/btrfs-control	Btrfs control device
452			235 = /dev/autofs	Autofs control device
453			236 = /dev/mapper/control	Device-Mapper control device
454			237 = /dev/loop-control Loopback control device
455			238 = /dev/vhost-net	Host kernel accelerator for virtio net
456			239 = /dev/uhid		User-space I/O driver support for HID subsystem
457	
458			240-254			Reserved for local use
459			255			Reserved for MISC_DYNAMIC_MINOR
460	
461	 11 char	Raw keyboard device	(Linux/SPARC only)
462			  0 = /dev/kbd		Raw keyboard device
463	
464	 11 char	Serial Mux device	(Linux/PA-RISC only)
465			  0 = /dev/ttyB0	First mux port
466			  1 = /dev/ttyB1	Second mux port
467			    ...
468	
469	 11 block	SCSI CD-ROM devices
470			  0 = /dev/scd0		First SCSI CD-ROM
471			  1 = /dev/scd1		Second SCSI CD-ROM
472			    ...
473	
474			The prefix /dev/sr (instead of /dev/scd) has been deprecated.
475	
476	 12 char	QIC-02 tape
477			  2 = /dev/ntpqic11	QIC-11, no rewind-on-close
478			  3 = /dev/tpqic11	QIC-11, rewind-on-close
479			  4 = /dev/ntpqic24	QIC-24, no rewind-on-close
480			  5 = /dev/tpqic24	QIC-24, rewind-on-close
481			  6 = /dev/ntpqic120	QIC-120, no rewind-on-close
482			  7 = /dev/tpqic120	QIC-120, rewind-on-close
483			  8 = /dev/ntpqic150	QIC-150, no rewind-on-close
484			  9 = /dev/tpqic150	QIC-150, rewind-on-close
485	
486			The device names specified are proposed -- if there
487			are "standard" names for these devices, please let me know.
488	
489	 12 block
490	
491	 13 char	Input core
492			  0 = /dev/input/js0	First joystick
493			  1 = /dev/input/js1	Second joystick
494			    ...
495			 32 = /dev/input/mouse0	First mouse
496			 33 = /dev/input/mouse1	Second mouse
497			    ...
498			 63 = /dev/input/mice	Unified mouse
499			 64 = /dev/input/event0	First event queue
500			 65 = /dev/input/event1	Second event queue
501			    ...
502	
503			Each device type has 5 bits (32 minors).
504	
505	 13 block	Previously used for the XT disk (/dev/xdN)
506			Deleted in kernel v3.9.
507	
508	 14 char	Open Sound System (OSS)
509			  0 = /dev/mixer	Mixer control
510			  1 = /dev/sequencer	Audio sequencer
511			  2 = /dev/midi00	First MIDI port
512			  3 = /dev/dsp		Digital audio
513			  4 = /dev/audio	Sun-compatible digital audio
514			  6 =
515			  7 = /dev/audioctl	SPARC audio control device
516			  8 = /dev/sequencer2	Sequencer -- alternate device
517			 16 = /dev/mixer1	Second soundcard mixer control
518			 17 = /dev/patmgr0	Sequencer patch manager
519			 18 = /dev/midi01	Second MIDI port
520			 19 = /dev/dsp1		Second soundcard digital audio
521			 20 = /dev/audio1	Second soundcard Sun digital audio
522			 33 = /dev/patmgr1	Sequencer patch manager
523			 34 = /dev/midi02	Third MIDI port
524			 50 = /dev/midi03	Fourth MIDI port
525	
526	 14 block
527	
528	 15 char	Joystick
529			  0 = /dev/js0		First analog joystick
530			  1 = /dev/js1		Second analog joystick
531			    ...
532			128 = /dev/djs0		First digital joystick
533			129 = /dev/djs1		Second digital joystick
534			    ...
535	 15 block	Sony CDU-31A/CDU-33A CD-ROM
536			  0 = /dev/sonycd	Sony CDU-31a CD-ROM
537	
538	 16 char	Non-SCSI scanners
539			  0 = /dev/gs4500	Genius 4500 handheld scanner
540	
541	 16 block	GoldStar CD-ROM
542			  0 = /dev/gscd		GoldStar CD-ROM
543	
544	 17 char	OBSOLETE (was Chase serial card)
545			  0 = /dev/ttyH0	First Chase port
546			  1 = /dev/ttyH1	Second Chase port
547			    ...
548	 17 block	Optics Storage CD-ROM
549			  0 = /dev/optcd	Optics Storage CD-ROM
550	
551	 18 char	OBSOLETE (was Chase serial card - alternate devices)
552			  0 = /dev/cuh0		Callout device for ttyH0
553			  1 = /dev/cuh1		Callout device for ttyH1
554			    ...
555	 18 block	Sanyo CD-ROM
556			  0 = /dev/sjcd		Sanyo CD-ROM
557	
558	 19 char	Cyclades serial card
559			  0 = /dev/ttyC0	First Cyclades port
560			    ...
561			 31 = /dev/ttyC31	32nd Cyclades port
562	
563	 19 block	"Double" compressed disk
564			  0 = /dev/double0	First compressed disk
565			    ...
566			  7 = /dev/double7	Eighth compressed disk
567			128 = /dev/cdouble0	Mirror of first compressed disk
568			    ...
569			135 = /dev/cdouble7	Mirror of eighth compressed disk
570	
571			See the Double documentation for the meaning of the
572			mirror devices.
573	
574	 20 char	Cyclades serial card - alternate devices
575			  0 = /dev/cub0		Callout device for ttyC0
576			    ...
577			 31 = /dev/cub31	Callout device for ttyC31
578	
579	 20 block	Hitachi CD-ROM (under development)
580			  0 = /dev/hitcd	Hitachi CD-ROM
581	
582	 21 char	Generic SCSI access
583			  0 = /dev/sg0		First generic SCSI device
584			  1 = /dev/sg1		Second generic SCSI device
585			    ...
586	
587			Most distributions name these /dev/sga, /dev/sgb...;
588			this sets an unnecessary limit of 26 SCSI devices in
589			the system and is counter to standard Linux
590			device-naming practice.
591	
592	 21 block	Acorn MFM hard drive interface
593			  0 = /dev/mfma		First MFM drive whole disk
594			 64 = /dev/mfmb		Second MFM drive whole disk
595	
596			This device is used on the ARM-based Acorn RiscPC.
597			Partitions are handled the same way as for IDE disks
598			(see major number 3).
599	
600	 22 char	Digiboard serial card
601			  0 = /dev/ttyD0	First Digiboard port
602			  1 = /dev/ttyD1	Second Digiboard port
603			    ...
604	 22 block	Second IDE hard disk/CD-ROM interface
605			  0 = /dev/hdc		Master: whole disk (or CD-ROM)
606			 64 = /dev/hdd		Slave: whole disk (or CD-ROM)
607	
608			Partitions are handled the same way as for the first
609			interface (see major number 3).
610	
611	 23 char	Digiboard serial card - alternate devices
612			  0 = /dev/cud0		Callout device for ttyD0
613			  1 = /dev/cud1		Callout device for ttyD1
614			      ...
615	 23 block	Mitsumi proprietary CD-ROM
616			  0 = /dev/mcd		Mitsumi CD-ROM
617	
618	 24 char	Stallion serial card
619			  0 = /dev/ttyE0	Stallion port 0 card 0
620			  1 = /dev/ttyE1	Stallion port 1 card 0
621			    ...
622			 64 = /dev/ttyE64	Stallion port 0 card 1
623			 65 = /dev/ttyE65	Stallion port 1 card 1
624			      ...
625			128 = /dev/ttyE128	Stallion port 0 card 2
626			129 = /dev/ttyE129	Stallion port 1 card 2
627			    ...
628			192 = /dev/ttyE192	Stallion port 0 card 3
629			193 = /dev/ttyE193	Stallion port 1 card 3
630			    ...
631	 24 block	Sony CDU-535 CD-ROM
632			  0 = /dev/cdu535	Sony CDU-535 CD-ROM
633	
634	 25 char	Stallion serial card - alternate devices
635			  0 = /dev/cue0		Callout device for ttyE0
636			  1 = /dev/cue1		Callout device for ttyE1
637			    ...
638			 64 = /dev/cue64	Callout device for ttyE64
639			 65 = /dev/cue65	Callout device for ttyE65
640			    ...
641			128 = /dev/cue128	Callout device for ttyE128
642			129 = /dev/cue129	Callout device for ttyE129
643			    ...
644			192 = /dev/cue192	Callout device for ttyE192
645			193 = /dev/cue193	Callout device for ttyE193
646			      ...
647	 25 block	First Matsushita (Panasonic/SoundBlaster) CD-ROM
648			  0 = /dev/sbpcd0	Panasonic CD-ROM controller 0 unit 0
649			  1 = /dev/sbpcd1	Panasonic CD-ROM controller 0 unit 1
650			  2 = /dev/sbpcd2	Panasonic CD-ROM controller 0 unit 2
651			  3 = /dev/sbpcd3	Panasonic CD-ROM controller 0 unit 3
652	
653	 26 char
654	
655	 26 block	Second Matsushita (Panasonic/SoundBlaster) CD-ROM
656			  0 = /dev/sbpcd4	Panasonic CD-ROM controller 1 unit 0
657			  1 = /dev/sbpcd5	Panasonic CD-ROM controller 1 unit 1
658			  2 = /dev/sbpcd6	Panasonic CD-ROM controller 1 unit 2
659			  3 = /dev/sbpcd7	Panasonic CD-ROM controller 1 unit 3
660	
661	 27 char	QIC-117 tape
662			  0 = /dev/qft0		Unit 0, rewind-on-close
663			  1 = /dev/qft1		Unit 1, rewind-on-close
664			  2 = /dev/qft2		Unit 2, rewind-on-close
665			  3 = /dev/qft3		Unit 3, rewind-on-close
666			  4 = /dev/nqft0	Unit 0, no rewind-on-close
667			  5 = /dev/nqft1	Unit 1, no rewind-on-close
668			  6 = /dev/nqft2	Unit 2, no rewind-on-close
669			  7 = /dev/nqft3	Unit 3, no rewind-on-close
670			 16 = /dev/zqft0	Unit 0, rewind-on-close, compression
671			 17 = /dev/zqft1	Unit 1, rewind-on-close, compression
672			 18 = /dev/zqft2	Unit 2, rewind-on-close, compression
673			 19 = /dev/zqft3	Unit 3, rewind-on-close, compression
674			 20 = /dev/nzqft0	Unit 0, no rewind-on-close, compression
675			 21 = /dev/nzqft1	Unit 1, no rewind-on-close, compression
676			 22 = /dev/nzqft2	Unit 2, no rewind-on-close, compression
677			 23 = /dev/nzqft3	Unit 3, no rewind-on-close, compression
678			 32 = /dev/rawqft0	Unit 0, rewind-on-close, no file marks
679			 33 = /dev/rawqft1	Unit 1, rewind-on-close, no file marks
680			 34 = /dev/rawqft2	Unit 2, rewind-on-close, no file marks
681			 35 = /dev/rawqft3	Unit 3, rewind-on-close, no file marks
682			 36 = /dev/nrawqft0	Unit 0, no rewind-on-close, no file marks
683			 37 = /dev/nrawqft1	Unit 1, no rewind-on-close, no file marks
684			 38 = /dev/nrawqft2	Unit 2, no rewind-on-close, no file marks
685			 39 = /dev/nrawqft3	Unit 3, no rewind-on-close, no file marks
686	
687	 27 block	Third Matsushita (Panasonic/SoundBlaster) CD-ROM
688			  0 = /dev/sbpcd8	Panasonic CD-ROM controller 2 unit 0
689			  1 = /dev/sbpcd9	Panasonic CD-ROM controller 2 unit 1
690			  2 = /dev/sbpcd10	Panasonic CD-ROM controller 2 unit 2
691			  3 = /dev/sbpcd11	Panasonic CD-ROM controller 2 unit 3
692	
693	 28 char	Stallion serial card - card programming
694			  0 = /dev/staliomem0	First Stallion card I/O memory
695			  1 = /dev/staliomem1	Second Stallion card I/O memory
696			  2 = /dev/staliomem2	Third Stallion card I/O memory
697			  3 = /dev/staliomem3	Fourth Stallion card I/O memory
698	
699	 28 char	Atari SLM ACSI laser printer (68k/Atari)
700			  0 = /dev/slm0		First SLM laser printer
701			  1 = /dev/slm1		Second SLM laser printer
702			    ...
703	 28 block	Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
704			  0 = /dev/sbpcd12	Panasonic CD-ROM controller 3 unit 0
705			  1 = /dev/sbpcd13	Panasonic CD-ROM controller 3 unit 1
706			  2 = /dev/sbpcd14	Panasonic CD-ROM controller 3 unit 2
707			  3 = /dev/sbpcd15	Panasonic CD-ROM controller 3 unit 3
708	
709	 28 block	ACSI disk (68k/Atari)
710			  0 = /dev/ada		First ACSI disk whole disk
711			 16 = /dev/adb		Second ACSI disk whole disk
712			 32 = /dev/adc		Third ACSI disk whole disk
713			    ...
714			240 = /dev/adp		16th ACSI disk whole disk
715	
716			Partitions are handled in the same way as for IDE
717			disks (see major number 3) except that the limit on
718			partitions is 15, like SCSI.
719	
720	 29 char	Universal frame buffer
721			  0 = /dev/fb0		First frame buffer
722			  1 = /dev/fb1		Second frame buffer
723			    ...
724			 31 = /dev/fb31		32nd frame buffer
725	
726	 29 block	Aztech/Orchid/Okano/Wearnes CD-ROM
727			  0 = /dev/aztcd	Aztech CD-ROM
728	
729	 30 char	iBCS-2 compatibility devices
730			  0 = /dev/socksys	Socket access
731			  1 = /dev/spx		SVR3 local X interface
732			 32 = /dev/inet/ip	Network access
733			 33 = /dev/inet/icmp
734			 34 = /dev/inet/ggp
735			 35 = /dev/inet/ipip
736			 36 = /dev/inet/tcp
737			 37 = /dev/inet/egp
738			 38 = /dev/inet/pup
739			 39 = /dev/inet/udp
740			 40 = /dev/inet/idp
741			 41 = /dev/inet/rawip
742	
743			Additionally, iBCS-2 requires the following links:
744	
745			/dev/ip -> /dev/inet/ip
746			/dev/icmp -> /dev/inet/icmp
747			/dev/ggp -> /dev/inet/ggp
748			/dev/ipip -> /dev/inet/ipip
749			/dev/tcp -> /dev/inet/tcp
750			/dev/egp -> /dev/inet/egp
751			/dev/pup -> /dev/inet/pup
752			/dev/udp -> /dev/inet/udp
753			/dev/idp -> /dev/inet/idp
754			/dev/rawip -> /dev/inet/rawip
755			/dev/inet/arp -> /dev/inet/udp
756			/dev/inet/rip -> /dev/inet/udp
757			/dev/nfsd -> /dev/socksys
758			/dev/X0R -> /dev/null (? apparently not required ?)
759	
760	 30 block	Philips LMS CM-205 CD-ROM
761			  0 = /dev/cm205cd	Philips LMS CM-205 CD-ROM
762	
763			/dev/lmscd is an older name for this device.  This
764			driver does not work with the CM-205MS CD-ROM.
765	
766	 31 char	MPU-401 MIDI
767			  0 = /dev/mpu401data	MPU-401 data port
768			  1 = /dev/mpu401stat	MPU-401 status port
769	
770	 31 block	ROM/flash memory card
771			  0 = /dev/rom0		First ROM card (rw)
772			      ...
773			  7 = /dev/rom7		Eighth ROM card (rw)
774			  8 = /dev/rrom0	First ROM card (ro)
775			    ...
776			 15 = /dev/rrom7	Eighth ROM card (ro)
777			 16 = /dev/flash0	First flash memory card (rw)
778			    ...
779			 23 = /dev/flash7	Eighth flash memory card (rw)
780			 24 = /dev/rflash0	First flash memory card (ro)
781			    ...
782			 31 = /dev/rflash7	Eighth flash memory card (ro)
783	
784			The read-write (rw) devices support back-caching
785			written data in RAM, as well as writing to flash RAM
786			devices.  The read-only devices (ro) support reading
787			only.
788	
789	 32 char	Specialix serial card
790			  0 = /dev/ttyX0	First Specialix port
791			  1 = /dev/ttyX1	Second Specialix port
792			    ...
793	 32 block	Philips LMS CM-206 CD-ROM
794			  0 = /dev/cm206cd	Philips LMS CM-206 CD-ROM
795	
796	 33 char	Specialix serial card - alternate devices
797			  0 = /dev/cux0		Callout device for ttyX0
798			  1 = /dev/cux1		Callout device for ttyX1
799			    ...
800	 33 block	Third IDE hard disk/CD-ROM interface
801			  0 = /dev/hde		Master: whole disk (or CD-ROM)
802			 64 = /dev/hdf		Slave: whole disk (or CD-ROM)
803	
804			Partitions are handled the same way as for the first
805			interface (see major number 3).
806	
807	 34 char	Z8530 HDLC driver
808			  0 = /dev/scc0		First Z8530, first port
809			  1 = /dev/scc1		First Z8530, second port
810			  2 = /dev/scc2		Second Z8530, first port
811			  3 = /dev/scc3		Second Z8530, second port
812			    ...
813	
814			In a previous version these devices were named
815			/dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so
816			on.
817	
818	 34 block	Fourth IDE hard disk/CD-ROM interface
819			  0 = /dev/hdg		Master: whole disk (or CD-ROM)
820			 64 = /dev/hdh		Slave: whole disk (or CD-ROM)
821	
822			Partitions are handled the same way as for the first
823			interface (see major number 3).
824	
825	 35 char	tclmidi MIDI driver
826			  0 = /dev/midi0	First MIDI port, kernel timed
827			  1 = /dev/midi1	Second MIDI port, kernel timed
828			  2 = /dev/midi2	Third MIDI port, kernel timed
829			  3 = /dev/midi3	Fourth MIDI port, kernel timed
830			 64 = /dev/rmidi0	First MIDI port, untimed
831			 65 = /dev/rmidi1	Second MIDI port, untimed
832			 66 = /dev/rmidi2	Third MIDI port, untimed
833			 67 = /dev/rmidi3	Fourth MIDI port, untimed
834			128 = /dev/smpte0	First MIDI port, SMPTE timed
835			129 = /dev/smpte1	Second MIDI port, SMPTE timed
836			130 = /dev/smpte2	Third MIDI port, SMPTE timed
837			131 = /dev/smpte3	Fourth MIDI port, SMPTE timed
838	
839	 35 block	Slow memory ramdisk
840			  0 = /dev/slram	Slow memory ramdisk
841	
842	 36 char	Netlink support
843			  0 = /dev/route	Routing, device updates, kernel to user
844			  1 = /dev/skip		enSKIP security cache control
845			  3 = /dev/fwmonitor	Firewall packet copies
846			 16 = /dev/tap0		First Ethertap device
847			    ...
848			 31 = /dev/tap15	16th Ethertap device
849	
850	 36 block	OBSOLETE (was MCA ESDI hard disk)
851	
852	 37 char	IDE tape
853			  0 = /dev/ht0		First IDE tape
854			  1 = /dev/ht1		Second IDE tape
855			    ...
856			128 = /dev/nht0		First IDE tape, no rewind-on-close
857			129 = /dev/nht1		Second IDE tape, no rewind-on-close
858			    ...
859	
860			Currently, only one IDE tape drive is supported.
861	
862	 37 block	Zorro II ramdisk
863			  0 = /dev/z2ram	Zorro II ramdisk
864	
865	 38 char	Myricom PCI Myrinet board
866			  0 = /dev/mlanai0	First Myrinet board
867			  1 = /dev/mlanai1	Second Myrinet board
868			    ...
869	
870			This device is used for status query, board control
871			and "user level packet I/O."  This board is also
872			accessible as a standard networking "eth" device.
873	
874	 38 block	OBSOLETE (was Linux/AP+)
875	
876	 39 char	ML-16P experimental I/O board
877			  0 = /dev/ml16pa-a0	First card, first analog channel
878			  1 = /dev/ml16pa-a1	First card, second analog channel
879			    ...
880			 15 = /dev/ml16pa-a15	First card, 16th analog channel
881			 16 = /dev/ml16pa-d	First card, digital lines
882			 17 = /dev/ml16pa-c0	First card, first counter/timer
883			 18 = /dev/ml16pa-c1	First card, second counter/timer
884			 19 = /dev/ml16pa-c2	First card, third counter/timer
885			 32 = /dev/ml16pb-a0	Second card, first analog channel
886			 33 = /dev/ml16pb-a1	Second card, second analog channel
887			    ...
888			 47 = /dev/ml16pb-a15	Second card, 16th analog channel
889			 48 = /dev/ml16pb-d	Second card, digital lines
890			 49 = /dev/ml16pb-c0	Second card, first counter/timer
891			 50 = /dev/ml16pb-c1	Second card, second counter/timer
892			 51 = /dev/ml16pb-c2	Second card, third counter/timer
893			      ...
894	 39 block
895	
896	 40 char
897	
898	 40 block
899	
900	 41 char	Yet Another Micro Monitor
901			  0 = /dev/yamm		Yet Another Micro Monitor
902	
903	 41 block
904	
905	 42 char	Demo/sample use
906	
907	 42 block	Demo/sample use
908	
909			This number is intended for use in sample code, as
910			well as a general "example" device number.  It
911			should never be used for a device driver that is being
912			distributed; either obtain an official number or use
913			the local/experimental range.  The sudden addition or
914			removal of a driver with this number should not cause
915			ill effects to the system (bugs excepted.)
916	
917			IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A
918			DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT.
919	
920	 43 char	isdn4linux virtual modem
921			  0 = /dev/ttyI0	First virtual modem
922			    ...
923			 63 = /dev/ttyI63	64th virtual modem
924	
925	 43 block	Network block devices
926			  0 = /dev/nb0		First network block device
927			  1 = /dev/nb1		Second network block device
928			    ...
929	
930			Network Block Device is somehow similar to loopback
931			devices: If you read from it, it sends packet across
932			network asking server for data. If you write to it, it
933			sends packet telling server to write. It could be used
934			to mounting filesystems over the net, swapping over
935			the net, implementing block device in userland etc.
936	
937	 44 char	isdn4linux virtual modem - alternate devices
938			  0 = /dev/cui0		Callout device for ttyI0
939			    ...
940			 63 = /dev/cui63	Callout device for ttyI63
941	
942	 44 block	Flash Translation Layer (FTL) filesystems
943			  0 = /dev/ftla		FTL on first Memory Technology Device
944			 16 = /dev/ftlb		FTL on second Memory Technology Device
945			 32 = /dev/ftlc		FTL on third Memory Technology Device
946			    ...
947			240 = /dev/ftlp		FTL on 16th Memory Technology Device
948	
949			Partitions are handled in the same way as for IDE
950			disks (see major number 3) except that the partition
951			limit is 15 rather than 63 per disk (same as SCSI.)
952	
953	 45 char	isdn4linux ISDN BRI driver
954			  0 = /dev/isdn0	First virtual B channel raw data
955			    ...
956			 63 = /dev/isdn63	64th virtual B channel raw data
957			 64 = /dev/isdnctrl0	First channel control/debug
958			    ...
959			127 = /dev/isdnctrl63	64th channel control/debug
960	
961			128 = /dev/ippp0	First SyncPPP device
962			    ...
963			191 = /dev/ippp63	64th SyncPPP device
964	
965			255 = /dev/isdninfo	ISDN monitor interface
966	
967	 45 block	Parallel port IDE disk devices
968			  0 = /dev/pda		First parallel port IDE disk
969			 16 = /dev/pdb		Second parallel port IDE disk
970			 32 = /dev/pdc		Third parallel port IDE disk
971			 48 = /dev/pdd		Fourth parallel port IDE disk
972	
973			Partitions are handled in the same way as for IDE
974			disks (see major number 3) except that the partition
975			limit is 15 rather than 63 per disk.
976	
977	 46 char	Comtrol Rocketport serial card
978			  0 = /dev/ttyR0	First Rocketport port
979			  1 = /dev/ttyR1	Second Rocketport port
980			    ...
981	 46 block	Parallel port ATAPI CD-ROM devices
982			  0 = /dev/pcd0		First parallel port ATAPI CD-ROM
983			  1 = /dev/pcd1		Second parallel port ATAPI CD-ROM
984			  2 = /dev/pcd2		Third parallel port ATAPI CD-ROM
985			  3 = /dev/pcd3		Fourth parallel port ATAPI CD-ROM
986	
987	 47 char	Comtrol Rocketport serial card - alternate devices
988			  0 = /dev/cur0		Callout device for ttyR0
989			  1 = /dev/cur1		Callout device for ttyR1
990			    ...
991	 47 block	Parallel port ATAPI disk devices
992			  0 = /dev/pf0		First parallel port ATAPI disk
993			  1 = /dev/pf1		Second parallel port ATAPI disk
994			  2 = /dev/pf2		Third parallel port ATAPI disk
995			  3 = /dev/pf3		Fourth parallel port ATAPI disk
996	
997			This driver is intended for floppy disks and similar
998			devices and hence does not support partitioning.
999	
1000	 48 char	SDL RISCom serial card
1001			  0 = /dev/ttyL0	First RISCom port
1002			  1 = /dev/ttyL1	Second RISCom port
1003			    ...
1004	 48 block	Mylex DAC960 PCI RAID controller; first controller
1005			  0 = /dev/rd/c0d0	First disk, whole disk
1006			  8 = /dev/rd/c0d1	Second disk, whole disk
1007			    ...
1008			248 = /dev/rd/c0d31	32nd disk, whole disk
1009	
1010			For partitions add:
1011			  0 = /dev/rd/c?d?	Whole disk
1012			  1 = /dev/rd/c?d?p1	First partition
1013			    ...
1014			  7 = /dev/rd/c?d?p7	Seventh partition
1015	
1016	 49 char	SDL RISCom serial card - alternate devices
1017			  0 = /dev/cul0		Callout device for ttyL0
1018			  1 = /dev/cul1		Callout device for ttyL1
1019			    ...
1020	 49 block	Mylex DAC960 PCI RAID controller; second controller
1021			  0 = /dev/rd/c1d0	First disk, whole disk
1022			  8 = /dev/rd/c1d1	Second disk, whole disk
1023			    ...
1024			248 = /dev/rd/c1d31	32nd disk, whole disk
1025	
1026			Partitions are handled as for major 48.
1027	
1028	 50 char	Reserved for GLINT
1029	
1030	 50 block	Mylex DAC960 PCI RAID controller; third controller
1031			  0 = /dev/rd/c2d0	First disk, whole disk
1032			  8 = /dev/rd/c2d1	Second disk, whole disk
1033			    ...
1034			248 = /dev/rd/c2d31	32nd disk, whole disk
1035	
1036	 51 char	Baycom radio modem OR Radio Tech BIM-XXX-RS232 radio modem
1037			  0 = /dev/bc0		First Baycom radio modem
1038			  1 = /dev/bc1		Second Baycom radio modem
1039			    ...
1040	 51 block	Mylex DAC960 PCI RAID controller; fourth controller
1041			  0 = /dev/rd/c3d0	First disk, whole disk
1042			  8 = /dev/rd/c3d1	Second disk, whole disk
1043			    ...
1044			248 = /dev/rd/c3d31	32nd disk, whole disk
1045	
1046			Partitions are handled as for major 48.
1047	
1048	 52 char	Spellcaster DataComm/BRI ISDN card
1049			  0 = /dev/dcbri0	First DataComm card
1050			  1 = /dev/dcbri1	Second DataComm card
1051			  2 = /dev/dcbri2	Third DataComm card
1052			  3 = /dev/dcbri3	Fourth DataComm card
1053	
1054	 52 block	Mylex DAC960 PCI RAID controller; fifth controller
1055			  0 = /dev/rd/c4d0	First disk, whole disk
1056			  8 = /dev/rd/c4d1	Second disk, whole disk
1057			    ...
1058			248 = /dev/rd/c4d31	32nd disk, whole disk
1059	
1060			Partitions are handled as for major 48.
1061	
1062	 53 char	BDM interface for remote debugging MC683xx microcontrollers
1063			  0 = /dev/pd_bdm0	PD BDM interface on lp0
1064			  1 = /dev/pd_bdm1	PD BDM interface on lp1
1065			  2 = /dev/pd_bdm2	PD BDM interface on lp2
1066			  4 = /dev/icd_bdm0	ICD BDM interface on lp0
1067			  5 = /dev/icd_bdm1	ICD BDM interface on lp1
1068			  6 = /dev/icd_bdm2	ICD BDM interface on lp2
1069	
1070			This device is used for the interfacing to the MC683xx
1071			microcontrollers via Background Debug Mode by use of a
1072			Parallel Port interface. PD is the Motorola Public
1073			Domain Interface and ICD is the commercial interface
1074			by P&E.
1075	
1076	 53 block	Mylex DAC960 PCI RAID controller; sixth controller
1077			  0 = /dev/rd/c5d0	First disk, whole disk
1078			  8 = /dev/rd/c5d1	Second disk, whole disk
1079			    ...
1080			248 = /dev/rd/c5d31	32nd disk, whole disk
1081	
1082			Partitions are handled as for major 48.
1083	
1084	 54 char	Electrocardiognosis Holter serial card
1085			  0 = /dev/holter0	First Holter port
1086			  1 = /dev/holter1	Second Holter port
1087			  2 = /dev/holter2	Third Holter port
1088	
1089			A custom serial card used by Electrocardiognosis SRL
1090			<mseritan@ottonel.pub.ro> to transfer data from Holter
1091			24-hour heart monitoring equipment.
1092	
1093	 54 block	Mylex DAC960 PCI RAID controller; seventh controller
1094			  0 = /dev/rd/c6d0	First disk, whole disk
1095			  8 = /dev/rd/c6d1	Second disk, whole disk
1096			    ...
1097			248 = /dev/rd/c6d31	32nd disk, whole disk
1098	
1099			Partitions are handled as for major 48.
1100	
1101	 55 char	DSP56001 digital signal processor
1102			  0 = /dev/dsp56k	First DSP56001
1103	
1104	 55 block	Mylex DAC960 PCI RAID controller; eighth controller
1105			  0 = /dev/rd/c7d0	First disk, whole disk
1106			  8 = /dev/rd/c7d1	Second disk, whole disk
1107			    ...
1108			248 = /dev/rd/c7d31	32nd disk, whole disk
1109	
1110			Partitions are handled as for major 48.
1111	
1112	 56 char	Apple Desktop Bus
1113			  0 = /dev/adb		ADB bus control
1114	
1115			Additional devices will be added to this number, all
1116			starting with /dev/adb.
1117	
1118	 56 block	Fifth IDE hard disk/CD-ROM interface
1119			  0 = /dev/hdi		Master: whole disk (or CD-ROM)
1120			 64 = /dev/hdj		Slave: whole disk (or CD-ROM)
1121	
1122			Partitions are handled the same way as for the first
1123			interface (see major number 3).
1124	
1125	 57 char	Hayes ESP serial card
1126			  0 = /dev/ttyP0	First ESP port
1127			  1 = /dev/ttyP1	Second ESP port
1128			    ...
1129	
1130	 57 block	Sixth IDE hard disk/CD-ROM interface
1131			  0 = /dev/hdk		Master: whole disk (or CD-ROM)
1132			 64 = /dev/hdl		Slave: whole disk (or CD-ROM)
1133	
1134			Partitions are handled the same way as for the first
1135			interface (see major number 3).
1136	
1137	 58 char	Hayes ESP serial card - alternate devices
1138			  0 = /dev/cup0		Callout device for ttyP0
1139			  1 = /dev/cup1		Callout device for ttyP1
1140			    ...
1141	
1142	 58 block	Reserved for logical volume manager
1143	
1144	 59 char	sf firewall package
1145			  0 = /dev/firewall	Communication with sf kernel module
1146	
1147	 59 block	Generic PDA filesystem device
1148			  0 = /dev/pda0		First PDA device
1149			  1 = /dev/pda1		Second PDA device
1150			    ...
1151	
1152			The pda devices are used to mount filesystems on
1153			remote pda's (basically slow handheld machines with
1154			proprietary OS's and limited memory and storage
1155			running small fs translation drivers) through serial /
1156			IRDA / parallel links.
1157	
1158			NAMING CONFLICT -- PROPOSED REVISED NAME /dev/rpda0 etc
1159	
1160	 60-63 char	LOCAL/EXPERIMENTAL USE
1161	
1162	 60-63 block	LOCAL/EXPERIMENTAL USE
1163			Allocated for local/experimental use.  For devices not
1164			assigned official numbers, these ranges should be
1165			used in order to avoid conflicting with future assignments.
1166	
1167	 64 char	ENskip kernel encryption package
1168			  0 = /dev/enskip	Communication with ENskip kernel module
1169	
1170	 64 block	Scramdisk/DriveCrypt encrypted devices
1171			  0 = /dev/scramdisk/master    Master node for ioctls
1172			  1 = /dev/scramdisk/1         First encrypted device
1173			  2 = /dev/scramdisk/2         Second encrypted device
1174			  ...
1175			255 = /dev/scramdisk/255       255th encrypted device
1176	
1177			The filename of the encrypted container and the passwords
1178			are sent via ioctls (using the sdmount tool) to the master
1179			node which then activates them via one of the
1180			/dev/scramdisk/x nodes for loop mounting (all handled
1181			through the sdmount tool).
1182	
1183			Requested by: andy@scramdisklinux.org
1184	
1185	 65 char	Sundance "plink" Transputer boards (obsolete, unused)
1186			  0 = /dev/plink0	First plink device
1187			  1 = /dev/plink1	Second plink device
1188			  2 = /dev/plink2	Third plink device
1189			  3 = /dev/plink3	Fourth plink device
1190			 64 = /dev/rplink0	First plink device, raw
1191			 65 = /dev/rplink1	Second plink device, raw
1192			 66 = /dev/rplink2	Third plink device, raw
1193			 67 = /dev/rplink3	Fourth plink device, raw
1194			128 = /dev/plink0d	First plink device, debug
1195			129 = /dev/plink1d	Second plink device, debug
1196			130 = /dev/plink2d	Third plink device, debug
1197			131 = /dev/plink3d	Fourth plink device, debug
1198			192 = /dev/rplink0d	First plink device, raw, debug
1199			193 = /dev/rplink1d	Second plink device, raw, debug
1200			194 = /dev/rplink2d	Third plink device, raw, debug
1201			195 = /dev/rplink3d	Fourth plink device, raw, debug
1202	
1203			This is a commercial driver; contact James Howes
1204			<jth@prosig.demon.co.uk> for information.
1205	
1206	 65 block	SCSI disk devices (16-31)
1207			  0 = /dev/sdq		17th SCSI disk whole disk
1208			 16 = /dev/sdr		18th SCSI disk whole disk
1209			 32 = /dev/sds		19th SCSI disk whole disk
1210			    ...
1211			240 = /dev/sdaf		32nd SCSI disk whole disk
1212	
1213			Partitions are handled in the same way as for IDE
1214			disks (see major number 3) except that the limit on
1215			partitions is 15.
1216	
1217	 66 char	YARC PowerPC PCI coprocessor card
1218			  0 = /dev/yppcpci0	First YARC card
1219			  1 = /dev/yppcpci1	Second YARC card
1220			    ...
1221	
1222	 66 block	SCSI disk devices (32-47)
1223			  0 = /dev/sdag		33th SCSI disk whole disk
1224			 16 = /dev/sdah		34th SCSI disk whole disk
1225			 32 = /dev/sdai		35th SCSI disk whole disk
1226			    ...
1227			240 = /dev/sdav		48nd SCSI disk whole disk
1228	
1229			Partitions are handled in the same way as for IDE
1230			disks (see major number 3) except that the limit on
1231			partitions is 15.
1232	
1233	 67 char	Coda network file system
1234			  0 = /dev/cfs0		Coda cache manager
1235	
1236			See http://www.coda.cs.cmu.edu for information about Coda.
1237	
1238	 67 block	SCSI disk devices (48-63)
1239			  0 = /dev/sdaw		49th SCSI disk whole disk
1240			 16 = /dev/sdax		50th SCSI disk whole disk
1241			 32 = /dev/sday		51st SCSI disk whole disk
1242			    ...
1243			240 = /dev/sdbl		64th SCSI disk whole disk
1244	
1245			Partitions are handled in the same way as for IDE
1246			disks (see major number 3) except that the limit on
1247			partitions is 15.
1248	
1249	 68 char	CAPI 2.0 interface
1250			  0 = /dev/capi20	Control device
1251			  1 = /dev/capi20.00	First CAPI 2.0 application
1252			  2 = /dev/capi20.01	Second CAPI 2.0 application
1253			    ...
1254			 20 = /dev/capi20.19	19th CAPI 2.0 application
1255	
1256			ISDN CAPI 2.0 driver for use with CAPI 2.0
1257			applications; currently supports the AVM B1 card.
1258	
1259	 68 block	SCSI disk devices (64-79)
1260			  0 = /dev/sdbm		65th SCSI disk whole disk
1261			 16 = /dev/sdbn		66th SCSI disk whole disk
1262			 32 = /dev/sdbo		67th SCSI disk whole disk
1263			    ...
1264			240 = /dev/sdcb		80th SCSI disk whole disk
1265	
1266			Partitions are handled in the same way as for IDE
1267			disks (see major number 3) except that the limit on
1268			partitions is 15.
1269	
1270	 69 char	MA16 numeric accelerator card
1271			  0 = /dev/ma16		Board memory access
1272	
1273	 69 block	SCSI disk devices (80-95)
1274			  0 = /dev/sdcc		81st SCSI disk whole disk
1275			 16 = /dev/sdcd		82nd SCSI disk whole disk
1276			 32 = /dev/sdce		83th SCSI disk whole disk
1277			    ...
1278			240 = /dev/sdcr		96th SCSI disk whole disk
1279	
1280			Partitions are handled in the same way as for IDE
1281			disks (see major number 3) except that the limit on
1282			partitions is 15.
1283	
1284	 70 char	SpellCaster Protocol Services Interface
1285			  0 = /dev/apscfg	Configuration interface
1286			  1 = /dev/apsauth	Authentication interface
1287			  2 = /dev/apslog	Logging interface
1288			  3 = /dev/apsdbg	Debugging interface
1289			 64 = /dev/apsisdn	ISDN command interface
1290			 65 = /dev/apsasync	Async command interface
1291			128 = /dev/apsmon	Monitor interface
1292	
1293	 70 block	SCSI disk devices (96-111)
1294			  0 = /dev/sdcs		97th SCSI disk whole disk
1295			 16 = /dev/sdct		98th SCSI disk whole disk
1296			 32 = /dev/sdcu		99th SCSI disk whole disk
1297			    ...
1298			240 = /dev/sddh		112nd SCSI disk whole disk
1299	
1300			Partitions are handled in the same way as for IDE
1301			disks (see major number 3) except that the limit on
1302			partitions is 15.
1303	
1304	 71 char	Computone IntelliPort II serial card
1305			  0 = /dev/ttyF0	IntelliPort II board 0, port 0
1306			  1 = /dev/ttyF1	IntelliPort II board 0, port 1
1307			    ...
1308			 63 = /dev/ttyF63	IntelliPort II board 0, port 63
1309			 64 = /dev/ttyF64	IntelliPort II board 1, port 0
1310			 65 = /dev/ttyF65	IntelliPort II board 1, port 1
1311			    ...
1312			127 = /dev/ttyF127	IntelliPort II board 1, port 63
1313			128 = /dev/ttyF128	IntelliPort II board 2, port 0
1314			129 = /dev/ttyF129	IntelliPort II board 2, port 1
1315			    ...
1316			191 = /dev/ttyF191	IntelliPort II board 2, port 63
1317			192 = /dev/ttyF192	IntelliPort II board 3, port 0
1318			193 = /dev/ttyF193	IntelliPort II board 3, port 1
1319			    ...
1320			255 = /dev/ttyF255	IntelliPort II board 3, port 63
1321	
1322	 71 block	SCSI disk devices (112-127)
1323			  0 = /dev/sddi		113th SCSI disk whole disk
1324			 16 = /dev/sddj		114th SCSI disk whole disk
1325			 32 = /dev/sddk		115th SCSI disk whole disk
1326			    ...
1327			240 = /dev/sddx		128th SCSI disk whole disk
1328	
1329			Partitions are handled in the same way as for IDE
1330			disks (see major number 3) except that the limit on
1331			partitions is 15.
1332	
1333	 72 char	Computone IntelliPort II serial card - alternate devices
1334			  0 = /dev/cuf0		Callout device for ttyF0
1335			  1 = /dev/cuf1		Callout device for ttyF1
1336			    ...
1337			 63 = /dev/cuf63	Callout device for ttyF63
1338			 64 = /dev/cuf64	Callout device for ttyF64
1339			 65 = /dev/cuf65	Callout device for ttyF65
1340			    ...
1341			127 = /dev/cuf127	Callout device for ttyF127
1342			128 = /dev/cuf128	Callout device for ttyF128
1343			129 = /dev/cuf129	Callout device for ttyF129
1344			    ...
1345			191 = /dev/cuf191	Callout device for ttyF191
1346			192 = /dev/cuf192	Callout device for ttyF192
1347			193 = /dev/cuf193	Callout device for ttyF193
1348			    ...
1349			255 = /dev/cuf255	Callout device for ttyF255
1350	
1351	 72 block	Compaq Intelligent Drive Array, first controller
1352			  0 = /dev/ida/c0d0	First logical drive whole disk
1353			 16 = /dev/ida/c0d1	Second logical drive whole disk
1354			    ...
1355			240 = /dev/ida/c0d15	16th logical drive whole disk
1356	
1357			Partitions are handled the same way as for Mylex
1358			DAC960 (see major number 48) except that the limit on
1359			partitions is 15.
1360	
1361	 73 char	Computone IntelliPort II serial card - control devices
1362			  0 = /dev/ip2ipl0	Loadware device for board 0
1363			  1 = /dev/ip2stat0	Status device for board 0
1364			  4 = /dev/ip2ipl1	Loadware device for board 1
1365			  5 = /dev/ip2stat1	Status device for board 1
1366			  8 = /dev/ip2ipl2	Loadware device for board 2
1367			  9 = /dev/ip2stat2	Status device for board 2
1368			 12 = /dev/ip2ipl3	Loadware device for board 3
1369			 13 = /dev/ip2stat3	Status device for board 3
1370	
1371	 73 block	Compaq Intelligent Drive Array, second controller
1372			  0 = /dev/ida/c1d0	First logical drive whole disk
1373			 16 = /dev/ida/c1d1	Second logical drive whole disk
1374			    ...
1375			240 = /dev/ida/c1d15	16th logical drive whole disk
1376	
1377			Partitions are handled the same way as for Mylex
1378			DAC960 (see major number 48) except that the limit on
1379			partitions is 15.
1380	
1381	 74 char	SCI bridge
1382			  0 = /dev/SCI/0	SCI device 0
1383			  1 = /dev/SCI/1	SCI device 1
1384			    ...
1385	
1386			Currently for Dolphin Interconnect Solutions' PCI-SCI
1387			bridge.
1388	
1389	 74 block	Compaq Intelligent Drive Array, third controller
1390			  0 = /dev/ida/c2d0	First logical drive whole disk
1391			 16 = /dev/ida/c2d1	Second logical drive whole disk
1392			    ...
1393			240 = /dev/ida/c2d15	16th logical drive whole disk
1394	
1395			Partitions are handled the same way as for Mylex
1396			DAC960 (see major number 48) except that the limit on
1397			partitions is 15.
1398	
1399	 75 char	Specialix IO8+ serial card
1400			  0 = /dev/ttyW0	First IO8+ port, first card
1401			  1 = /dev/ttyW1	Second IO8+ port, first card
1402			    ...
1403			  8 = /dev/ttyW8	First IO8+ port, second card
1404			    ...
1405	
1406	 75 block	Compaq Intelligent Drive Array, fourth controller
1407			  0 = /dev/ida/c3d0	First logical drive whole disk
1408			 16 = /dev/ida/c3d1	Second logical drive whole disk
1409			    ...
1410			240 = /dev/ida/c3d15	16th logical drive whole disk
1411	
1412			Partitions are handled the same way as for Mylex
1413			DAC960 (see major number 48) except that the limit on
1414			partitions is 15.
1415	
1416	 76 char	Specialix IO8+ serial card - alternate devices
1417			  0 = /dev/cuw0		Callout device for ttyW0
1418			  1 = /dev/cuw1		Callout device for ttyW1
1419			    ...
1420			  8 = /dev/cuw8		Callout device for ttyW8
1421			    ...
1422	
1423	 76 block	Compaq Intelligent Drive Array, fifth controller
1424			  0 = /dev/ida/c4d0	First logical drive whole disk
1425			 16 = /dev/ida/c4d1	Second logical drive whole disk
1426			    ...
1427			240 = /dev/ida/c4d15	16th logical drive whole disk
1428	
1429			Partitions are handled the same way as for Mylex
1430			DAC960 (see major number 48) except that the limit on
1431			partitions is 15.
1432	
1433	
1434	 77 char	ComScire Quantum Noise Generator
1435			  0 = /dev/qng		ComScire Quantum Noise Generator
1436	
1437	 77 block	Compaq Intelligent Drive Array, sixth controller
1438			  0 = /dev/ida/c5d0	First logical drive whole disk
1439			 16 = /dev/ida/c5d1	Second logical drive whole disk
1440			    ...
1441			240 = /dev/ida/c5d15	16th logical drive whole disk
1442	
1443			Partitions are handled the same way as for Mylex
1444			DAC960 (see major number 48) except that the limit on
1445			partitions is 15.
1446	
1447	 78 char	PAM Software's multimodem boards
1448			  0 = /dev/ttyM0	First PAM modem
1449			  1 = /dev/ttyM1	Second PAM modem
1450			    ...
1451	
1452	 78 block	Compaq Intelligent Drive Array, seventh controller
1453			  0 = /dev/ida/c6d0	First logical drive whole disk
1454			 16 = /dev/ida/c6d1	Second logical drive whole disk
1455			    ...
1456			240 = /dev/ida/c6d15	16th logical drive whole disk
1457	
1458			Partitions are handled the same way as for Mylex
1459			DAC960 (see major number 48) except that the limit on
1460			partitions is 15.
1461	
1462	 79 char	PAM Software's multimodem boards - alternate devices
1463			  0 = /dev/cum0		Callout device for ttyM0
1464			  1 = /dev/cum1		Callout device for ttyM1
1465			    ...
1466	
1467	 79 block	Compaq Intelligent Drive Array, eighth controller
1468			  0 = /dev/ida/c7d0	First logical drive whole disk
1469			 16 = /dev/ida/c7d1	Second logical drive whole disk
1470			    ...
1471			240 = /dev/ida/c715	16th logical drive whole disk
1472	
1473			Partitions are handled the same way as for Mylex
1474			DAC960 (see major number 48) except that the limit on
1475			partitions is 15.
1476	
1477	 80 char	Photometrics AT200 CCD camera
1478			  0 = /dev/at200	Photometrics AT200 CCD camera
1479	
1480	 80 block	I2O hard disk
1481			  0 = /dev/i2o/hda	First I2O hard disk, whole disk
1482			 16 = /dev/i2o/hdb	Second I2O hard disk, whole disk
1483			    ...
1484			240 = /dev/i2o/hdp	16th I2O hard disk, whole disk
1485	
1486			Partitions are handled in the same way as for IDE
1487			disks (see major number 3) except that the limit on
1488			partitions is 15.
1489	
1490	 81 char	video4linux
1491			  0 = /dev/video0	Video capture/overlay device
1492			    ...
1493			 63 = /dev/video63	Video capture/overlay device
1494			 64 = /dev/radio0	Radio device
1495			    ...
1496			127 = /dev/radio63	Radio device
1497			128 = /dev/swradio0	Software Defined Radio device
1498			    ...
1499			191 = /dev/swradio63	Software Defined Radio device
1500			224 = /dev/vbi0		Vertical blank interrupt
1501			    ...
1502			255 = /dev/vbi31	Vertical blank interrupt
1503	
1504			Minor numbers are allocated dynamically unless
1505			CONFIG_VIDEO_FIXED_MINOR_RANGES (default n)
1506			configuration option is set.
1507	
1508	 81 block	I2O hard disk
1509			  0 = /dev/i2o/hdq	17th I2O hard disk, whole disk
1510			 16 = /dev/i2o/hdr	18th I2O hard disk, whole disk
1511			    ...
1512			240 = /dev/i2o/hdaf	32nd I2O hard disk, whole disk
1513	
1514			Partitions are handled in the same way as for IDE
1515			disks (see major number 3) except that the limit on
1516			partitions is 15.
1517	
1518	 82 char	WiNRADiO communications receiver card
1519			  0 = /dev/winradio0	First WiNRADiO card
1520			  1 = /dev/winradio1	Second WiNRADiO card
1521			    ...
1522	
1523			The driver and documentation may be obtained from
1524			http://www.winradio.com/
1525	
1526	 82 block	I2O hard disk
1527			  0 = /dev/i2o/hdag	33rd I2O hard disk, whole disk
1528			 16 = /dev/i2o/hdah	34th I2O hard disk, whole disk
1529			    ...
1530			240 = /dev/i2o/hdav	48th I2O hard disk, whole disk
1531	
1532			Partitions are handled in the same way as for IDE
1533			disks (see major number 3) except that the limit on
1534			partitions is 15.
1535	
1536	 83 char	Matrox mga_vid video driver
1537	 		 0 = /dev/mga_vid0	1st video card
1538			 1 = /dev/mga_vid1	2nd video card
1539			 2 = /dev/mga_vid2	3rd video card
1540			  ...
1541		        15 = /dev/mga_vid15	16th video card
1542	
1543	 83 block	I2O hard disk
1544			  0 = /dev/i2o/hdaw	49th I2O hard disk, whole disk
1545			 16 = /dev/i2o/hdax	50th I2O hard disk, whole disk
1546			    ...
1547			240 = /dev/i2o/hdbl	64th I2O hard disk, whole disk
1548	
1549			Partitions are handled in the same way as for IDE
1550			disks (see major number 3) except that the limit on
1551			partitions is 15.
1552	
1553	 84 char	Ikon 1011[57] Versatec Greensheet Interface
1554			  0 = /dev/ihcp0	First Greensheet port
1555			  1 = /dev/ihcp1	Second Greensheet port
1556	
1557	 84 block	I2O hard disk
1558			  0 = /dev/i2o/hdbm	65th I2O hard disk, whole disk
1559			 16 = /dev/i2o/hdbn	66th I2O hard disk, whole disk
1560			    ...
1561			240 = /dev/i2o/hdcb	80th I2O hard disk, whole disk
1562	
1563			Partitions are handled in the same way as for IDE
1564			disks (see major number 3) except that the limit on
1565			partitions is 15.
1566	
1567	 85 char	Linux/SGI shared memory input queue
1568			  0 = /dev/shmiq	Master shared input queue
1569			  1 = /dev/qcntl0	First device pushed
1570			  2 = /dev/qcntl1	Second device pushed
1571			    ...
1572	
1573	 85 block	I2O hard disk
1574			  0 = /dev/i2o/hdcc	81st I2O hard disk, whole disk
1575			 16 = /dev/i2o/hdcd	82nd I2O hard disk, whole disk
1576			    ...
1577			240 = /dev/i2o/hdcr	96th I2O hard disk, whole disk
1578	
1579			Partitions are handled in the same way as for IDE
1580			disks (see major number 3) except that the limit on
1581			partitions is 15.
1582	
1583	 86 char	SCSI media changer
1584			  0 = /dev/sch0		First SCSI media changer
1585			  1 = /dev/sch1		Second SCSI media changer
1586			    ...
1587	
1588	 86 block	I2O hard disk
1589			  0 = /dev/i2o/hdcs	97th I2O hard disk, whole disk
1590			 16 = /dev/i2o/hdct	98th I2O hard disk, whole disk
1591			    ...
1592			240 = /dev/i2o/hddh	112th I2O hard disk, whole disk
1593	
1594			Partitions are handled in the same way as for IDE
1595			disks (see major number 3) except that the limit on
1596			partitions is 15.
1597	
1598	 87 char	Sony Control-A1 stereo control bus
1599			  0 = /dev/controla0	First device on chain
1600			  1 = /dev/controla1	Second device on chain
1601			    ...
1602	
1603	 87 block	I2O hard disk
1604			  0 = /dev/i2o/hddi	113rd I2O hard disk, whole disk
1605			 16 = /dev/i2o/hddj	114th I2O hard disk, whole disk
1606			    ...
1607			240 = /dev/i2o/hddx	128th I2O hard disk, whole disk
1608	
1609			Partitions are handled in the same way as for IDE
1610			disks (see major number 3) except that the limit on
1611			partitions is 15.
1612	
1613	 88 char	COMX synchronous serial card
1614			  0 = /dev/comx0	COMX channel 0
1615			  1 = /dev/comx1	COMX channel 1
1616			    ...
1617	
1618	 88 block	Seventh IDE hard disk/CD-ROM interface
1619			  0 = /dev/hdm		Master: whole disk (or CD-ROM)
1620			 64 = /dev/hdn		Slave: whole disk (or CD-ROM)
1621	
1622			Partitions are handled the same way as for the first
1623			interface (see major number 3).
1624	
1625	 89 char	I2C bus interface
1626			  0 = /dev/i2c-0	First I2C adapter
1627			  1 = /dev/i2c-1	Second I2C adapter
1628			    ...
1629	
1630	 89 block	Eighth IDE hard disk/CD-ROM interface
1631			  0 = /dev/hdo		Master: whole disk (or CD-ROM)
1632			 64 = /dev/hdp		Slave: whole disk (or CD-ROM)
1633	
1634			Partitions are handled the same way as for the first
1635			interface (see major number 3).
1636	
1637	 90 char	Memory Technology Device (RAM, ROM, Flash)
1638			  0 = /dev/mtd0		First MTD (rw)
1639			  1 = /dev/mtdr0	First MTD (ro)
1640			    ...
1641			 30 = /dev/mtd15	16th MTD (rw)
1642			 31 = /dev/mtdr15	16th MTD (ro)
1643	
1644	 90 block	Ninth IDE hard disk/CD-ROM interface
1645			  0 = /dev/hdq		Master: whole disk (or CD-ROM)
1646			 64 = /dev/hdr		Slave: whole disk (or CD-ROM)
1647	
1648			Partitions are handled the same way as for the first
1649			interface (see major number 3).
1650	
1651	 91 char	CAN-Bus devices
1652			  0 = /dev/can0		First CAN-Bus controller
1653			  1 = /dev/can1		Second CAN-Bus controller
1654			    ...
1655	
1656	 91 block	Tenth IDE hard disk/CD-ROM interface
1657			  0 = /dev/hds		Master: whole disk (or CD-ROM)
1658			 64 = /dev/hdt		Slave: whole disk (or CD-ROM)
1659	
1660			Partitions are handled the same way as for the first
1661			interface (see major number 3).
1662	
1663	 92 char	Reserved for ith Kommunikationstechnik MIC ISDN card
1664	
1665	 92 block	PPDD encrypted disk driver
1666			  0 = /dev/ppdd0	First encrypted disk
1667			  1 = /dev/ppdd1	Second encrypted disk
1668			    ...
1669	
1670			Partitions are handled in the same way as for IDE
1671			disks (see major number 3) except that the limit on
1672			partitions is 15.
1673	
1674	 93 char
1675	
1676	 93 block	NAND Flash Translation Layer filesystem
1677			  0 = /dev/nftla	First NFTL layer
1678			 16 = /dev/nftlb	Second NFTL layer
1679			    ...
1680			240 = /dev/nftlp	16th NTFL layer
1681	
1682	 94 char
1683	
1684	 94 block	IBM S/390 DASD block storage
1685	    		  0 = /dev/dasda First DASD device, major
1686	    		  1 = /dev/dasda1 First DASD device, block 1
1687		    	  2 = /dev/dasda2 First DASD device, block 2
1688	    		  3 = /dev/dasda3 First DASD device, block 3
1689	    		  4 = /dev/dasdb Second DASD device, major
1690	    		  5 = /dev/dasdb1 Second DASD device, block 1
1691	    		  6 = /dev/dasdb2 Second DASD device, block 2
1692	    		  7 = /dev/dasdb3 Second DASD device, block 3
1693			    ...
1694	
1695	 95 char	IP filter
1696			  0 = /dev/ipl		Filter control device/log file
1697			  1 = /dev/ipnat	NAT control device/log file
1698			  2 = /dev/ipstate	State information log file
1699			  3 = /dev/ipauth	Authentication control device/log file
1700			    ...
1701	
1702	 96 char	Parallel port ATAPI tape devices
1703			  0 = /dev/pt0		First parallel port ATAPI tape
1704			  1 = /dev/pt1		Second parallel port ATAPI tape
1705			    ...
1706			128 = /dev/npt0		First p.p. ATAPI tape, no rewind
1707			129 = /dev/npt1		Second p.p. ATAPI tape, no rewind
1708			    ...
1709	
1710	 96 block	Inverse NAND Flash Translation Layer
1711			  0 = /dev/inftla First INFTL layer
1712			 16 = /dev/inftlb Second INFTL layer
1713			    ...
1714			240 = /dev/inftlp	16th INTFL layer
1715	
1716	 97 char	Parallel port generic ATAPI interface
1717			  0 = /dev/pg0		First parallel port ATAPI device
1718			  1 = /dev/pg1		Second parallel port ATAPI device
1719			  2 = /dev/pg2		Third parallel port ATAPI device
1720			  3 = /dev/pg3		Fourth parallel port ATAPI device
1721	
1722			These devices support the same API as the generic SCSI
1723			devices.
1724	
1725	 98 char	Control and Measurement Device (comedi)
1726			  0 = /dev/comedi0	First comedi device
1727			  1 = /dev/comedi1	Second comedi device
1728			    ...
1729	
1730			See http://stm.lbl.gov/comedi.
1731	
1732	 98 block	User-mode virtual block device
1733			  0 = /dev/ubda		First user-mode block device
1734			 16 = /dev/udbb		Second user-mode block device
1735			    ...
1736	
1737			Partitions are handled in the same way as for IDE
1738			disks (see major number 3) except that the limit on
1739			partitions is 15.
1740	
1741			This device is used by the user-mode virtual kernel port.
1742	
1743	 99 char	Raw parallel ports
1744			  0 = /dev/parport0	First parallel port
1745			  1 = /dev/parport1	Second parallel port
1746			    ...
1747	
1748	 99 block	JavaStation flash disk
1749			  0 = /dev/jsfd		JavaStation flash disk
1750	
1751	100 char	Telephony for Linux
1752			  0 = /dev/phone0	First telephony device
1753			  1 = /dev/phone1	Second telephony device
1754			    ...
1755	
1756	101 char	Motorola DSP 56xxx board
1757			  0 = /dev/mdspstat	Status information
1758			  1 = /dev/mdsp1	First DSP board I/O controls
1759			    ...
1760			 16 = /dev/mdsp16	16th DSP board I/O controls
1761	
1762	101 block	AMI HyperDisk RAID controller
1763			  0 = /dev/amiraid/ar0	First array whole disk
1764			 16 = /dev/amiraid/ar1	Second array whole disk
1765			    ...
1766			240 = /dev/amiraid/ar15	16th array whole disk
1767	
1768			For each device, partitions are added as:
1769			  0 = /dev/amiraid/ar?	  Whole disk
1770			  1 = /dev/amiraid/ar?p1  First partition
1771			  2 = /dev/amiraid/ar?p2  Second partition
1772			    ...
1773			 15 = /dev/amiraid/ar?p15 15th partition
1774	
1775	102 char
1776	
1777	102 block	Compressed block device
1778			  0 = /dev/cbd/a	First compressed block device, whole device
1779			 16 = /dev/cbd/b	Second compressed block device, whole device
1780			    ...
1781			240 = /dev/cbd/p	16th compressed block device, whole device
1782	
1783			Partitions are handled in the same way as for IDE
1784			disks (see major number 3) except that the limit on
1785			partitions is 15.
1786	
1787	103 char	Arla network file system
1788			  0 = /dev/nnpfs0	First NNPFS device
1789			  1 = /dev/nnpfs1	Second NNPFS device
1790	
1791			Arla is a free clone of the Andrew File System, AFS.
1792			The NNPFS device gives user mode filesystem
1793			implementations a kernel presence for caching and easy
1794			mounting.  For more information about the project,
1795			write to <arla-drinkers@stacken.kth.se> or see
1796			http://www.stacken.kth.se/project/arla/
1797	
1798	103 block	Audit device
1799			  0 = /dev/audit	Audit device
1800	
1801	104 char	Flash BIOS support
1802	
1803	104 block	Compaq Next Generation Drive Array, first controller
1804			  0 = /dev/cciss/c0d0	First logical drive, whole disk
1805			 16 = /dev/cciss/c0d1	Second logical drive, whole disk
1806			    ...
1807			240 = /dev/cciss/c0d15	16th logical drive, whole disk
1808	
1809			Partitions are handled the same way as for Mylex
1810			DAC960 (see major number 48) except that the limit on
1811			partitions is 15.
1812	
1813	105 char	Comtrol VS-1000 serial controller
1814			  0 = /dev/ttyV0	First VS-1000 port
1815			  1 = /dev/ttyV1	Second VS-1000 port
1816			    ...
1817	
1818	105 block	Compaq Next Generation Drive Array, second controller
1819			  0 = /dev/cciss/c1d0	First logical drive, whole disk
1820			 16 = /dev/cciss/c1d1	Second logical drive, whole disk
1821			    ...
1822			240 = /dev/cciss/c1d15	16th logical drive, whole disk
1823	
1824			Partitions are handled the same way as for Mylex
1825			DAC960 (see major number 48) except that the limit on
1826			partitions is 15.
1827	
1828	106 char	Comtrol VS-1000 serial controller - alternate devices
1829			  0 = /dev/cuv0		First VS-1000 port
1830			  1 = /dev/cuv1		Second VS-1000 port
1831			    ...
1832	
1833	106 block	Compaq Next Generation Drive Array, third controller
1834			  0 = /dev/cciss/c2d0	First logical drive, whole disk
1835			 16 = /dev/cciss/c2d1	Second logical drive, whole disk
1836			    ...
1837			240 = /dev/cciss/c2d15	16th logical drive, whole disk
1838	
1839			Partitions are handled the same way as for Mylex
1840			DAC960 (see major number 48) except that the limit on
1841			partitions is 15.
1842	
1843	107 char	3Dfx Voodoo Graphics device
1844			  0 = /dev/3dfx		Primary 3Dfx graphics device
1845	
1846	107 block	Compaq Next Generation Drive Array, fourth controller
1847			  0 = /dev/cciss/c3d0	First logical drive, whole disk
1848			 16 = /dev/cciss/c3d1	Second logical drive, whole disk
1849			    ...
1850			240 = /dev/cciss/c3d15	16th logical drive, whole disk
1851	
1852			Partitions are handled the same way as for Mylex
1853			DAC960 (see major number 48) except that the limit on
1854			partitions is 15.
1855	
1856	108 char	Device independent PPP interface
1857			  0 = /dev/ppp		Device independent PPP interface
1858	
1859	108 block	Compaq Next Generation Drive Array, fifth controller
1860			  0 = /dev/cciss/c4d0	First logical drive, whole disk
1861			 16 = /dev/cciss/c4d1	Second logical drive, whole disk
1862			    ...
1863			240 = /dev/cciss/c4d15	16th logical drive, whole disk
1864	
1865			Partitions are handled the same way as for Mylex
1866			DAC960 (see major number 48) except that the limit on
1867			partitions is 15.
1868	
1869	109 char	Reserved for logical volume manager
1870	
1871	109 block	Compaq Next Generation Drive Array, sixth controller
1872			  0 = /dev/cciss/c5d0	First logical drive, whole disk
1873			 16 = /dev/cciss/c5d1	Second logical drive, whole disk
1874			    ...
1875			240 = /dev/cciss/c5d15	16th logical drive, whole disk
1876	
1877			Partitions are handled the same way as for Mylex
1878			DAC960 (see major number 48) except that the limit on
1879			partitions is 15.
1880	
1881	110 char	miroMEDIA Surround board
1882			  0 = /dev/srnd0	First miroMEDIA Surround board
1883			  1 = /dev/srnd1	Second miroMEDIA Surround board
1884			    ...
1885	
1886	110 block	Compaq Next Generation Drive Array, seventh controller
1887			  0 = /dev/cciss/c6d0	First logical drive, whole disk
1888			 16 = /dev/cciss/c6d1	Second logical drive, whole disk
1889			    ...
1890			240 = /dev/cciss/c6d15	16th logical drive, whole disk
1891	
1892			Partitions are handled the same way as for Mylex
1893			DAC960 (see major number 48) except that the limit on
1894			partitions is 15.
1895	
1896	111 char
1897	
1898	111 block	Compaq Next Generation Drive Array, eighth controller
1899			  0 = /dev/cciss/c7d0	First logical drive, whole disk
1900			 16 = /dev/cciss/c7d1	Second logical drive, whole disk
1901			    ...
1902			240 = /dev/cciss/c7d15	16th logical drive, whole disk
1903	
1904			Partitions are handled the same way as for Mylex
1905			DAC960 (see major number 48) except that the limit on
1906			partitions is 15.
1907	
1908	112 char	ISI serial card
1909			  0 = /dev/ttyM0	First ISI port
1910			  1 = /dev/ttyM1	Second ISI port
1911			    ...
1912	
1913			There is currently a device-naming conflict between
1914			these and PAM multimodems (major 78).
1915	
1916	112 block	IBM iSeries virtual disk
1917			  0 = /dev/iseries/vda	First virtual disk, whole disk
1918			  8 = /dev/iseries/vdb	Second virtual disk, whole disk
1919			    ...
1920			200 = /dev/iseries/vdz	26th virtual disk, whole disk
1921			208 = /dev/iseries/vdaa	27th virtual disk, whole disk
1922			    ...
1923			248 = /dev/iseries/vdaf	32nd virtual disk, whole disk
1924	
1925			Partitions are handled in the same way as for IDE
1926			disks (see major number 3) except that the limit on
1927			partitions is 7.
1928	
1929	113 char	ISI serial card - alternate devices
1930			  0 = /dev/cum0		Callout device for ttyM0
1931			  1 = /dev/cum1		Callout device for ttyM1
1932			    ...
1933	
1934	113 block	IBM iSeries virtual CD-ROM
1935			  0 = /dev/iseries/vcda	First virtual CD-ROM
1936			  1 = /dev/iseries/vcdb	Second virtual CD-ROM
1937			    ...
1938	
1939	114 char	Picture Elements ISE board
1940			  0 = /dev/ise0		First ISE board
1941			  1 = /dev/ise1		Second ISE board
1942			    ...
1943			128 = /dev/isex0	Control node for first ISE board
1944			129 = /dev/isex1	Control node for second ISE board
1945			    ...
1946	
1947			The ISE board is an embedded computer, optimized for
1948			image processing. The /dev/iseN nodes are the general
1949			I/O access to the board, the /dev/isex0 nodes command
1950			nodes used to control the board.
1951	
1952	114 block       IDE BIOS powered software RAID interfaces such as the
1953	                Promise Fastrak
1954	
1955	                  0 = /dev/ataraid/d0
1956	                  1 = /dev/ataraid/d0p1
1957	                  2 = /dev/ataraid/d0p2
1958	                  ...
1959	                 16 = /dev/ataraid/d1
1960	                 17 = /dev/ataraid/d1p1
1961	                 18 = /dev/ataraid/d1p2
1962	                  ...
1963	                255 = /dev/ataraid/d15p15
1964	
1965			Partitions are handled in the same way as for IDE
1966			disks (see major number 3) except that the limit on
1967			partitions is 15.
1968	
1969	115 char	TI link cable devices (115 was formerly the console driver speaker)
1970			  0 = /dev/tipar0    Parallel cable on first parallel port
1971			  ...
1972			  7 = /dev/tipar7    Parallel cable on seventh parallel port
1973	
1974			  8 = /dev/tiser0    Serial cable on first serial port
1975			  ...
1976			 15 = /dev/tiser7    Serial cable on seventh serial port
1977	
1978			 16 = /dev/tiusb0    First USB cable
1979			  ...
1980			 47 = /dev/tiusb31   32nd USB cable
1981	
1982	115 block       NetWare (NWFS) Devices (0-255)
1983	
1984	                The NWFS (NetWare) devices are used to present a
1985	                collection of NetWare Mirror Groups or NetWare
1986	                Partitions as a logical storage segment for
1987	                use in mounting NetWare volumes.  A maximum of
1988	                256 NetWare volumes can be supported in a single
1989	                machine.
1990	
1991	                http://cgfa.telepac.pt/ftp2/kernel.org/linux/kernel/people/jmerkey/nwfs/
1992	
1993	                0 = /dev/nwfs/v0    First NetWare (NWFS) Logical Volume
1994	                1 = /dev/nwfs/v1    Second NetWare (NWFS) Logical Volume
1995	                2 = /dev/nwfs/v2    Third NetWare (NWFS) Logical Volume
1996	                      ...
1997	                255 = /dev/nwfs/v255    Last NetWare (NWFS) Logical Volume
1998	
1999	116 char	Advanced Linux Sound Driver (ALSA)
2000	
2001	116 block       MicroMemory battery backed RAM adapter (NVRAM)
2002	                Supports 16 boards, 15 partitions each.
2003	                Requested by neilb at cse.unsw.edu.au.
2004	
2005			 0 = /dev/umem/d0      Whole of first board
2006			 1 = /dev/umem/d0p1    First partition of first board
2007			 2 = /dev/umem/d0p2    Second partition of first board
2008			15 = /dev/umem/d0p15   15th partition of first board
2009	
2010			16 = /dev/umem/d1      Whole of second board
2011			17 = /dev/umem/d1p1    First partition of second board
2012			    ...
2013			255= /dev/umem/d15p15  15th partition of 16th board.
2014	
2015	117 char	COSA/SRP synchronous serial card
2016			  0 = /dev/cosa0c0	1st board, 1st channel
2017			  1 = /dev/cosa0c1	1st board, 2nd channel
2018			    ...
2019			 16 = /dev/cosa1c0	2nd board, 1st channel
2020			 17 = /dev/cosa1c1	2nd board, 2nd channel
2021			    ...
2022	
2023	117 block       Enterprise Volume Management System (EVMS)
2024	
2025	                The EVMS driver uses a layered, plug-in model to provide
2026	                unparalleled flexibility and extensibility in managing
2027	                storage.  This allows for easy expansion or customization
2028	                of various levels of volume management.  Requested by
2029	                Mark Peloquin (peloquin at us.ibm.com).
2030	
2031	                Note: EVMS populates and manages all the devnodes in
2032	                /dev/evms.
2033	
2034	                http://sf.net/projects/evms
2035	
2036	                  0 = /dev/evms/block_device   EVMS block device
2037	                  1 = /dev/evms/legacyname1    First EVMS legacy device
2038	                  2 = /dev/evms/legacyname2    Second EVMS legacy device
2039	                    ...
2040	                    Both ranges can grow (down or up) until they meet.
2041	                    ...
2042	                254 = /dev/evms/EVMSname2      Second EVMS native device
2043	                255 = /dev/evms/EVMSname1      First EVMS native device
2044	
2045	                Note: legacyname(s) are derived from the normal legacy
2046	                device names.  For example, /dev/hda5 would become
2047	                /dev/evms/hda5.
2048	
2049	118 char	IBM Cryptographic Accelerator
2050			  0 = /dev/ica	Virtual interface to all IBM Crypto Accelerators
2051			  1 = /dev/ica0	IBMCA Device 0
2052			  2 = /dev/ica1	IBMCA Device 1
2053			    ...
2054	
2055	119 char	VMware virtual network control
2056			  0 = /dev/vnet0	1st virtual network
2057			  1 = /dev/vnet1	2nd virtual network
2058			    ...
2059	
2060	120-127 char	LOCAL/EXPERIMENTAL USE
2061	
2062	120-127 block	LOCAL/EXPERIMENTAL USE
2063			Allocated for local/experimental use.  For devices not
2064			assigned official numbers, these ranges should be
2065			used in order to avoid conflicting with future assignments.
2066	
2067	128-135 char	Unix98 PTY masters
2068	
2069			These devices should not have corresponding device
2070			nodes; instead they should be accessed through the
2071			/dev/ptmx cloning interface.
2072	
2073	128 block       SCSI disk devices (128-143)
2074	                  0 = /dev/sddy         129th SCSI disk whole disk
2075	                 16 = /dev/sddz         130th SCSI disk whole disk
2076	                 32 = /dev/sdea         131th SCSI disk whole disk
2077	                    ...
2078	                240 = /dev/sden         144th SCSI disk whole disk
2079	
2080			Partitions are handled in the same way as for IDE
2081			disks (see major number 3) except that the limit on
2082			partitions is 15.
2083	
2084	129 block       SCSI disk devices (144-159)
2085	                  0 = /dev/sdeo         145th SCSI disk whole disk
2086	                 16 = /dev/sdep         146th SCSI disk whole disk
2087	                 32 = /dev/sdeq         147th SCSI disk whole disk
2088	                    ...
2089	                240 = /dev/sdfd         160th SCSI disk whole disk
2090	
2091			Partitions are handled in the same way as for IDE
2092			disks (see major number 3) except that the limit on
2093			partitions is 15.
2094	
2095	130 char 	(Misc devices)
2096	
2097	130 block       SCSI disk devices (160-175)
2098	                  0 = /dev/sdfe         161st SCSI disk whole disk
2099	                 16 = /dev/sdff         162nd SCSI disk whole disk
2100	                 32 = /dev/sdfg         163rd SCSI disk whole disk
2101	                    ...
2102	                240 = /dev/sdft         176th SCSI disk whole disk
2103	
2104			Partitions are handled in the same way as for IDE
2105			disks (see major number 3) except that the limit on
2106			partitions is 15.
2107	
2108	131 block       SCSI disk devices (176-191)
2109	                  0 = /dev/sdfu         177th SCSI disk whole disk
2110	                 16 = /dev/sdfv         178th SCSI disk whole disk
2111	                 32 = /dev/sdfw         179th SCSI disk whole disk
2112	                    ...
2113	                240 = /dev/sdgj         192nd SCSI disk whole disk
2114	
2115			Partitions are handled in the same way as for IDE
2116			disks (see major number 3) except that the limit on
2117			partitions is 15.
2118	
2119	132 block       SCSI disk devices (192-207)
2120	                  0 = /dev/sdgk         193rd SCSI disk whole disk
2121	                 16 = /dev/sdgl         194th SCSI disk whole disk
2122	                 32 = /dev/sdgm         195th SCSI disk whole disk
2123	                    ...
2124	                240 = /dev/sdgz         208th SCSI disk whole disk
2125	
2126			Partitions are handled in the same way as for IDE
2127			disks (see major number 3) except that the limit on
2128			partitions is 15.
2129	
2130	133 block       SCSI disk devices (208-223)
2131	                  0 = /dev/sdha         209th SCSI disk whole disk
2132	                 16 = /dev/sdhb         210th SCSI disk whole disk
2133	                 32 = /dev/sdhc         211th SCSI disk whole disk
2134	                    ...
2135	                240 = /dev/sdhp         224th SCSI disk whole disk
2136	
2137			Partitions are handled in the same way as for IDE
2138			disks (see major number 3) except that the limit on
2139			partitions is 15.
2140	
2141	134 block       SCSI disk devices (224-239)
2142	                  0 = /dev/sdhq         225th SCSI disk whole disk
2143	                 16 = /dev/sdhr         226th SCSI disk whole disk
2144	                 32 = /dev/sdhs         227th SCSI disk whole disk
2145	                    ...
2146	                240 = /dev/sdif         240th SCSI disk whole disk
2147	
2148			Partitions are handled in the same way as for IDE
2149			disks (see major number 3) except that the limit on
2150			partitions is 15.
2151	
2152	135 block       SCSI disk devices (240-255)
2153	                  0 = /dev/sdig         241st SCSI disk whole disk
2154	                 16 = /dev/sdih         242nd SCSI disk whole disk
2155	                 32 = /dev/sdih         243rd SCSI disk whole disk
2156	                    ...
2157	                240 = /dev/sdiv         256th SCSI disk whole disk
2158	
2159			Partitions are handled in the same way as for IDE
2160			disks (see major number 3) except that the limit on
2161			partitions is 15.
2162	
2163	136-143 char	Unix98 PTY slaves
2164			  0 = /dev/pts/0	First Unix98 pseudo-TTY
2165			  1 = /dev/pts/1	Second Unix98 pseudo-TTY
2166			    ...
2167	
2168			These device nodes are automatically generated with
2169			the proper permissions and modes by mounting the
2170			devpts filesystem onto /dev/pts with the appropriate
2171			mount options (distribution dependent, however, on
2172			*most* distributions the appropriate options are
2173			"mode=0620,gid=<gid of the "tty" group>".)
2174	
2175	136 block	Mylex DAC960 PCI RAID controller; ninth controller
2176			  0 = /dev/rd/c8d0	First disk, whole disk
2177			  8 = /dev/rd/c8d1	Second disk, whole disk
2178			    ...
2179			248 = /dev/rd/c8d31	32nd disk, whole disk
2180	
2181			Partitions are handled as for major 48.
2182	
2183	137 block	Mylex DAC960 PCI RAID controller; tenth controller
2184			  0 = /dev/rd/c9d0	First disk, whole disk
2185			  8 = /dev/rd/c9d1	Second disk, whole disk
2186			    ...
2187			248 = /dev/rd/c9d31	32nd disk, whole disk
2188	
2189			Partitions are handled as for major 48.
2190	
2191	138 block	Mylex DAC960 PCI RAID controller; eleventh controller
2192			  0 = /dev/rd/c10d0	First disk, whole disk
2193			  8 = /dev/rd/c10d1	Second disk, whole disk
2194			    ...
2195			248 = /dev/rd/c10d31	32nd disk, whole disk
2196	
2197			Partitions are handled as for major 48.
2198	
2199	139 block	Mylex DAC960 PCI RAID controller; twelfth controller
2200			  0 = /dev/rd/c11d0	First disk, whole disk
2201			  8 = /dev/rd/c11d1	Second disk, whole disk
2202			    ...
2203			248 = /dev/rd/c11d31	32nd disk, whole disk
2204	
2205			Partitions are handled as for major 48.
2206	
2207	140 block	Mylex DAC960 PCI RAID controller; thirteenth controller
2208			  0 = /dev/rd/c12d0	First disk, whole disk
2209			  8 = /dev/rd/c12d1	Second disk, whole disk
2210			    ...
2211			248 = /dev/rd/c12d31	32nd disk, whole disk
2212	
2213			Partitions are handled as for major 48.
2214	
2215	141 block	Mylex DAC960 PCI RAID controller; fourteenth controller
2216			  0 = /dev/rd/c13d0	First disk, whole disk
2217			  8 = /dev/rd/c13d1	Second disk, whole disk
2218			    ...
2219			248 = /dev/rd/c13d31	32nd disk, whole disk
2220	
2221			Partitions are handled as for major 48.
2222	
2223	142 block	Mylex DAC960 PCI RAID controller; fifteenth controller
2224			  0 = /dev/rd/c14d0	First disk, whole disk
2225			  8 = /dev/rd/c14d1	Second disk, whole disk
2226			    ...
2227			248 = /dev/rd/c14d31	32nd disk, whole disk
2228	
2229			Partitions are handled as for major 48.
2230	
2231	143 block	Mylex DAC960 PCI RAID controller; sixteenth controller
2232			  0 = /dev/rd/c15d0	First disk, whole disk
2233			  8 = /dev/rd/c15d1	Second disk, whole disk
2234			    ...
2235			248 = /dev/rd/c15d31	32nd disk, whole disk
2236	
2237			Partitions are handled as for major 48.
2238	
2239	144 char	Encapsulated PPP
2240			  0 = /dev/pppox0	First PPP over Ethernet
2241			    ...
2242			 63 = /dev/pppox63	64th PPP over Ethernet
2243	
2244			This is primarily used for ADSL.
2245	
2246			The SST 5136-DN DeviceNet interface driver has been
2247			relocated to major 183 due to an unfortunate conflict.
2248	
2249	144 block	Expansion Area #1 for more non-device (e.g. NFS) mounts
2250			  0 = mounted device 256
2251			255 = mounted device 511
2252	
2253	145 char	SAM9407-based soundcard
2254			  0 = /dev/sam0_mixer
2255			  1 = /dev/sam0_sequencer
2256			  2 = /dev/sam0_midi00
2257			  3 = /dev/sam0_dsp
2258			  4 = /dev/sam0_audio
2259			  6 = /dev/sam0_sndstat
2260			 18 = /dev/sam0_midi01
2261			 34 = /dev/sam0_midi02
2262			 50 = /dev/sam0_midi03
2263			 64 = /dev/sam1_mixer
2264			    ...
2265			128 = /dev/sam2_mixer
2266			    ...
2267			192 = /dev/sam3_mixer
2268			    ...
2269	
2270			Device functions match OSS, but offer a number of
2271			addons, which are sam9407 specific.  OSS can be
2272			operated simultaneously, taking care of the codec.
2273	
2274	145 block	Expansion Area #2 for more non-device (e.g. NFS) mounts
2275			  0 = mounted device 512
2276			255 = mounted device 767
2277	
2278	146 char	SYSTRAM SCRAMNet mirrored-memory network
2279			  0 = /dev/scramnet0	First SCRAMNet device
2280			  1 = /dev/scramnet1	Second SCRAMNet device
2281			    ...
2282	
2283	146 block	Expansion Area #3 for more non-device (e.g. NFS) mounts
2284			  0 = mounted device 768
2285			255 = mounted device 1023
2286	
2287	147 char	Aureal Semiconductor Vortex Audio device
2288			  0 = /dev/aureal0	First Aureal Vortex
2289			  1 = /dev/aureal1	Second Aureal Vortex
2290			    ...
2291	
2292	147 block	Distributed Replicated Block Device (DRBD)
2293			  0 = /dev/drbd0	First DRBD device
2294			  1 = /dev/drbd1	Second DRBD device
2295			    ...
2296	
2297	148 char	Technology Concepts serial card
2298			  0 = /dev/ttyT0	First TCL port
2299			  1 = /dev/ttyT1	Second TCL port
2300			    ...
2301	
2302	149 char	Technology Concepts serial card - alternate devices
2303			  0 = /dev/cut0		Callout device for ttyT0
2304			  1 = /dev/cut0		Callout device for ttyT1
2305			    ...
2306	
2307	150 char	Real-Time Linux FIFOs
2308			  0 = /dev/rtf0		First RTLinux FIFO
2309			  1 = /dev/rtf1		Second RTLinux FIFO
2310			    ...
2311	
2312	151 char	DPT I2O SmartRaid V controller
2313			  0 = /dev/dpti0	First DPT I2O adapter
2314			  1 = /dev/dpti1	Second DPT I2O adapter
2315			    ...
2316	
2317	152 char	EtherDrive Control Device
2318			  0 = /dev/etherd/ctl	Connect/Disconnect an EtherDrive
2319			  1 = /dev/etherd/err	Monitor errors
2320			  2 = /dev/etherd/raw	Raw AoE packet monitor
2321	
2322	152 block	EtherDrive Block Devices
2323			  0 = /dev/etherd/0	EtherDrive 0
2324			    ...
2325			255 = /dev/etherd/255	EtherDrive 255
2326	
2327	153 char	SPI Bus Interface (sometimes referred to as MicroWire)
2328			  0 = /dev/spi0		First SPI device on the bus
2329			  1 = /dev/spi1		Second SPI device on the bus
2330			    ...
2331			 15 = /dev/spi15	Sixteenth SPI device on the bus
2332	
2333	153 block	Enhanced Metadisk RAID (EMD) storage units
2334			  0 = /dev/emd/0	First unit
2335			  1 = /dev/emd/0p1	Partition 1 on First unit
2336			  2 = /dev/emd/0p2	Partition 2 on First unit
2337			    ...
2338			 15 = /dev/emd/0p15	Partition 15 on First unit
2339	
2340			 16 = /dev/emd/1	Second unit
2341			 32 = /dev/emd/2	Third unit
2342			    ...
2343			240 = /dev/emd/15	Sixteenth unit
2344	
2345			Partitions are handled in the same way as for IDE
2346			disks (see major number 3) except that the limit on
2347			partitions is 15.
2348	
2349	154 char	Specialix RIO serial card
2350			  0 = /dev/ttySR0	First RIO port
2351			    ...
2352			255 = /dev/ttySR255	256th RIO port
2353	
2354	155 char	Specialix RIO serial card - alternate devices
2355			  0 = /dev/cusr0	Callout device for ttySR0
2356			    ...
2357			255 = /dev/cusr255	Callout device for ttySR255
2358	
2359	156 char	Specialix RIO serial card
2360			  0 = /dev/ttySR256	257th RIO port
2361			    ...
2362			255 = /dev/ttySR511	512th RIO port
2363	
2364	157 char	Specialix RIO serial card - alternate devices
2365			  0 = /dev/cusr256	Callout device for ttySR256
2366			    ...
2367			255 = /dev/cusr511	Callout device for ttySR511
2368	
2369	158 char	Dialogic GammaLink fax driver
2370			  0 = /dev/gfax0	GammaLink channel 0
2371			  1 = /dev/gfax1	GammaLink channel 1
2372			    ...
2373	
2374	159 char	RESERVED
2375	
2376	159 block	RESERVED
2377	
2378	160 char	General Purpose Instrument Bus (GPIB)
2379			  0 = /dev/gpib0	First GPIB bus
2380			  1 = /dev/gpib1	Second GPIB bus
2381			    ...
2382	
2383	160 block       Carmel 8-port SATA Disks on First Controller
2384			  0 = /dev/carmel/0     SATA disk 0 whole disk
2385			  1 = /dev/carmel/0p1   SATA disk 0 partition 1
2386			    ...
2387			 31 = /dev/carmel/0p31  SATA disk 0 partition 31
2388	
2389			 32 = /dev/carmel/1     SATA disk 1 whole disk
2390			 64 = /dev/carmel/2     SATA disk 2 whole disk
2391			    ...
2392			224 = /dev/carmel/7     SATA disk 7 whole disk
2393	
2394			Partitions are handled in the same way as for IDE
2395			disks (see major number 3) except that the limit on
2396			partitions is 31.
2397	
2398	161 char	IrCOMM devices (IrDA serial/parallel emulation)
2399			  0 = /dev/ircomm0	First IrCOMM device
2400			  1 = /dev/ircomm1	Second IrCOMM device
2401			    ...
2402			 16 = /dev/irlpt0	First IrLPT device
2403			 17 = /dev/irlpt1	Second IrLPT device
2404			    ...
2405	
2406	161 block       Carmel 8-port SATA Disks on Second Controller
2407			  0 = /dev/carmel/8     SATA disk 8 whole disk
2408			  1 = /dev/carmel/8p1   SATA disk 8 partition 1
2409			    ...
2410			 31 = /dev/carmel/8p31  SATA disk 8 partition 31
2411	
2412			 32 = /dev/carmel/9     SATA disk 9 whole disk
2413			 64 = /dev/carmel/10    SATA disk 10 whole disk
2414			    ...
2415			224 = /dev/carmel/15    SATA disk 15 whole disk
2416	
2417			Partitions are handled in the same way as for IDE
2418			disks (see major number 3) except that the limit on
2419			partitions is 31.
2420	
2421	162 char	Raw block device interface
2422			  0 = /dev/rawctl	Raw I/O control device
2423			  1 = /dev/raw/raw1	First raw I/O device
2424			  2 = /dev/raw/raw2	Second raw I/O device
2425			    ...
2426	                 max minor number of raw device is set by kernel config
2427	                 MAX_RAW_DEVS or raw module parameter 'max_raw_devs'
2428	
2429	163 char
2430	
2431	164 char	Chase Research AT/PCI-Fast serial card
2432			  0 = /dev/ttyCH0	AT/PCI-Fast board 0, port 0
2433			    ...
2434			 15 = /dev/ttyCH15	AT/PCI-Fast board 0, port 15
2435			 16 = /dev/ttyCH16	AT/PCI-Fast board 1, port 0
2436			    ...
2437			 31 = /dev/ttyCH31	AT/PCI-Fast board 1, port 15
2438			 32 = /dev/ttyCH32	AT/PCI-Fast board 2, port 0
2439			    ...
2440			 47 = /dev/ttyCH47	AT/PCI-Fast board 2, port 15
2441			 48 = /dev/ttyCH48	AT/PCI-Fast board 3, port 0
2442			    ...
2443			 63 = /dev/ttyCH63	AT/PCI-Fast board 3, port 15
2444	
2445	165 char	Chase Research AT/PCI-Fast serial card - alternate devices
2446			  0 = /dev/cuch0	Callout device for ttyCH0
2447			    ...
2448			 63 = /dev/cuch63	Callout device for ttyCH63
2449	
2450	166 char	ACM USB modems
2451			  0 = /dev/ttyACM0	First ACM modem
2452			  1 = /dev/ttyACM1	Second ACM modem
2453			    ...
2454	
2455	167 char	ACM USB modems - alternate devices
2456			  0 = /dev/cuacm0	Callout device for ttyACM0
2457			  1 = /dev/cuacm1	Callout device for ttyACM1
2458			    ...
2459	
2460	168 char	Eracom CSA7000 PCI encryption adaptor
2461			  0 = /dev/ecsa0	First CSA7000
2462			  1 = /dev/ecsa1	Second CSA7000
2463			    ...
2464	
2465	169 char	Eracom CSA8000 PCI encryption adaptor
2466			  0 = /dev/ecsa8-0	First CSA8000
2467			  1 = /dev/ecsa8-1	Second CSA8000
2468			    ...
2469	
2470	170 char	AMI MegaRAC remote access controller
2471			  0 = /dev/megarac0	First MegaRAC card
2472			  1 = /dev/megarac1	Second MegaRAC card
2473			    ...
2474	
2475	171 char	Reserved for IEEE 1394 (Firewire)
2476	
2477	172 char	Moxa Intellio serial card
2478			  0 = /dev/ttyMX0	First Moxa port
2479			  1 = /dev/ttyMX1	Second Moxa port
2480			    ...
2481			127 = /dev/ttyMX127	128th Moxa port
2482			128 = /dev/moxactl	Moxa control port
2483	
2484	173 char	Moxa Intellio serial card - alternate devices
2485			  0 = /dev/cumx0	Callout device for ttyMX0
2486			  1 = /dev/cumx1	Callout device for ttyMX1
2487			    ...
2488			127 = /dev/cumx127	Callout device for ttyMX127
2489	
2490	174 char	SmartIO serial card
2491			  0 = /dev/ttySI0	First SmartIO port
2492			  1 = /dev/ttySI1	Second SmartIO port
2493			    ...
2494	
2495	175 char	SmartIO serial card - alternate devices
2496			  0 = /dev/cusi0	Callout device for ttySI0
2497			  1 = /dev/cusi1	Callout device for ttySI1
2498			    ...
2499	
2500	176 char	nCipher nFast PCI crypto accelerator
2501			  0 = /dev/nfastpci0	First nFast PCI device
2502			  1 = /dev/nfastpci1	First nFast PCI device
2503			    ...
2504	
2505	177 char	TI PCILynx memory spaces
2506			  0 = /dev/pcilynx/aux0	 AUX space of first PCILynx card
2507			    ...
2508			 15 = /dev/pcilynx/aux15 AUX space of 16th PCILynx card
2509			 16 = /dev/pcilynx/rom0	 ROM space of first PCILynx card
2510			    ...
2511			 31 = /dev/pcilynx/rom15 ROM space of 16th PCILynx card
2512			 32 = /dev/pcilynx/ram0	 RAM space of first PCILynx card
2513			    ...
2514			 47 = /dev/pcilynx/ram15 RAM space of 16th PCILynx card
2515	
2516	178 char	Giganet cLAN1xxx virtual interface adapter
2517			  0 = /dev/clanvi0	First cLAN adapter
2518			  1 = /dev/clanvi1	Second cLAN adapter
2519			    ...
2520	
2521	179 block       MMC block devices
2522			  0 = /dev/mmcblk0      First SD/MMC card
2523			  1 = /dev/mmcblk0p1    First partition on first MMC card
2524			  8 = /dev/mmcblk1      Second SD/MMC card
2525			    ...
2526	
2527			The start of next SD/MMC card can be configured with
2528			CONFIG_MMC_BLOCK_MINORS, or overridden at boot/modprobe
2529			time using the mmcblk.perdev_minors option. That would
2530			bump the offset between each card to be the configured
2531			value instead of the default 8.
2532	
2533	179 char	CCube DVXChip-based PCI products
2534			  0 = /dev/dvxirq0	First DVX device
2535			  1 = /dev/dvxirq1	Second DVX device
2536			    ...
2537	
2538	180 char	USB devices
2539			  0 = /dev/usb/lp0	First USB printer
2540			    ...
2541			 15 = /dev/usb/lp15	16th USB printer
2542			 48 = /dev/usb/scanner0	First USB scanner
2543			    ...
2544			 63 = /dev/usb/scanner15 16th USB scanner
2545			 64 = /dev/usb/rio500	Diamond Rio 500
2546			 65 = /dev/usb/usblcd	USBLCD Interface (info@usblcd.de)
2547			 66 = /dev/usb/cpad0	Synaptics cPad (mouse/LCD)
2548			 96 = /dev/usb/hiddev0	1st USB HID device
2549			    ...
2550			111 = /dev/usb/hiddev15	16th USB HID device
2551			112 = /dev/usb/auer0	1st auerswald ISDN device
2552			    ...
2553			127 = /dev/usb/auer15	16th auerswald ISDN device
2554			128 = /dev/usb/brlvgr0	First Braille Voyager device
2555			    ...
2556			131 = /dev/usb/brlvgr3	Fourth Braille Voyager device
2557			132 = /dev/usb/idmouse	ID Mouse (fingerprint scanner) device
2558			133 = /dev/usb/sisusbvga1	First SiSUSB VGA device
2559			    ...
2560			140 = /dev/usb/sisusbvga8	Eighth SISUSB VGA device
2561			144 = /dev/usb/lcd	USB LCD device
2562			160 = /dev/usb/legousbtower0	1st USB Legotower device
2563			    ...
2564			175 = /dev/usb/legousbtower15	16th USB Legotower device
2565			176 = /dev/usb/usbtmc1	First USB TMC device
2566			   ...
2567			191 = /dev/usb/usbtmc16	16th USB TMC device
2568			192 = /dev/usb/yurex1	First USB Yurex device
2569			   ...
2570			209 = /dev/usb/yurex16	16th USB Yurex device
2571	
2572	180 block	USB block devices
2573			  0 = /dev/uba		First USB block device
2574			  8 = /dev/ubb		Second USB block device
2575			 16 = /dev/ubc		Third USB block device
2576	 		    ...
2577	
2578	181 char	Conrad Electronic parallel port radio clocks
2579			  0 = /dev/pcfclock0	First Conrad radio clock
2580			  1 = /dev/pcfclock1	Second Conrad radio clock
2581			    ...
2582	
2583	182 char	Picture Elements THR2 binarizer
2584			  0 = /dev/pethr0	First THR2 board
2585			  1 = /dev/pethr1	Second THR2 board
2586			    ...
2587	
2588	183 char	SST 5136-DN DeviceNet interface
2589			  0 = /dev/ss5136dn0	First DeviceNet interface
2590			  1 = /dev/ss5136dn1	Second DeviceNet interface
2591			    ...
2592	
2593			This device used to be assigned to major number 144.
2594			It had to be moved due to an unfortunate conflict.
2595	
2596	184 char	Picture Elements' video simulator/sender
2597			  0 = /dev/pevss0	First sender board
2598			  1 = /dev/pevss1	Second sender board
2599			    ...
2600	
2601	185 char	InterMezzo high availability file system
2602			  0 = /dev/intermezzo0	First cache manager
2603			  1 = /dev/intermezzo1	Second cache manager
2604			    ...
2605	
2606			See http://web.archive.org/web/20080115195241/
2607			http://inter-mezzo.org/index.html
2608	
2609	186 char	Object-based storage control device
2610			  0 = /dev/obd0		First obd control device
2611			  1 = /dev/obd1		Second obd control device
2612			    ...
2613	
2614			See ftp://ftp.lustre.org/pub/obd for code and information.
2615	
2616	187 char	DESkey hardware encryption device
2617			  0 = /dev/deskey0	First DES key
2618			  1 = /dev/deskey1	Second DES key
2619			    ...
2620	
2621	188 char	USB serial converters
2622			  0 = /dev/ttyUSB0	First USB serial converter
2623			  1 = /dev/ttyUSB1	Second USB serial converter
2624			    ...
2625	
2626	189 char	USB serial converters - alternate devices
2627			  0 = /dev/cuusb0	Callout device for ttyUSB0
2628			  1 = /dev/cuusb1	Callout device for ttyUSB1
2629			    ...
2630	
2631	190 char	Kansas City tracker/tuner card
2632			  0 = /dev/kctt0	First KCT/T card
2633			  1 = /dev/kctt1	Second KCT/T card
2634			    ...
2635	
2636	191 char	Reserved for PCMCIA
2637	
2638	192 char	Kernel profiling interface
2639			  0 = /dev/profile	Profiling control device
2640			  1 = /dev/profile0	Profiling device for CPU 0
2641			  2 = /dev/profile1	Profiling device for CPU 1
2642			    ...
2643	
2644	193 char	Kernel event-tracing interface
2645			  0 = /dev/trace	Tracing control device
2646			  1 = /dev/trace0	Tracing device for CPU 0
2647			  2 = /dev/trace1	Tracing device for CPU 1
2648			    ...
2649	
2650	194 char	linVideoStreams (LINVS)
2651			  0 = /dev/mvideo/status0	Video compression status
2652			  1 = /dev/mvideo/stream0	Video stream
2653			  2 = /dev/mvideo/frame0	Single compressed frame
2654			  3 = /dev/mvideo/rawframe0	Raw uncompressed frame
2655			  4 = /dev/mvideo/codec0	Direct codec access
2656			  5 = /dev/mvideo/video4linux0	Video4Linux compatibility
2657	
2658			 16 = /dev/mvideo/status1	Second device
2659			    ...
2660			 32 = /dev/mvideo/status2	Third device
2661			    ...
2662			    ...
2663			240 = /dev/mvideo/status15	16th device
2664			    ...
2665	
2666	195 char	Nvidia graphics devices
2667			  0 = /dev/nvidia0		First Nvidia card
2668			  1 = /dev/nvidia1		Second Nvidia card
2669			    ...
2670			255 = /dev/nvidiactl		Nvidia card control device
2671	
2672	196 char	Tormenta T1 card
2673			  0 = /dev/tor/0		Master control channel for all cards
2674			  1 = /dev/tor/1		First DS0
2675			  2 = /dev/tor/2		Second DS0
2676			    ...
2677			 48 = /dev/tor/48		48th DS0
2678			 49 = /dev/tor/49		First pseudo-channel
2679			 50 = /dev/tor/50		Second pseudo-channel
2680			    ...
2681	
2682	197 char	OpenTNF tracing facility
2683			  0 = /dev/tnf/t0		Trace 0 data extraction
2684			  1 = /dev/tnf/t1		Trace 1 data extraction
2685			    ...
2686			128 = /dev/tnf/status		Tracing facility status
2687			130 = /dev/tnf/trace		Tracing device
2688	
2689	198 char	Total Impact TPMP2 quad coprocessor PCI card
2690			  0 = /dev/tpmp2/0		First card
2691			  1 = /dev/tpmp2/1		Second card
2692			    ...
2693	
2694	199 char	Veritas volume manager (VxVM) volumes
2695			  0 = /dev/vx/rdsk/*/*		First volume
2696			  1 = /dev/vx/rdsk/*/*		Second volume
2697			    ...
2698	
2699	199 block	Veritas volume manager (VxVM) volumes
2700			  0 = /dev/vx/dsk/*/*		First volume
2701			  1 = /dev/vx/dsk/*/*		Second volume
2702			    ...
2703	
2704			The namespace in these directories is maintained by
2705			the user space VxVM software.
2706	
2707	200 char	Veritas VxVM configuration interface
2708	                  0 = /dev/vx/config		Configuration access node
2709	                  1 = /dev/vx/trace		Volume i/o trace access node
2710	                  2 = /dev/vx/iod		Volume i/o daemon access node
2711	                  3 = /dev/vx/info		Volume information access node
2712	                  4 = /dev/vx/task		Volume tasks access node
2713	                  5 = /dev/vx/taskmon		Volume tasks monitor daemon
2714	
2715	201 char	Veritas VxVM dynamic multipathing driver
2716			  0 = /dev/vx/rdmp/*		First multipath device
2717			  1 = /dev/vx/rdmp/*		Second multipath device
2718			    ...
2719	201 block	Veritas VxVM dynamic multipathing driver
2720			  0 = /dev/vx/dmp/*		First multipath device
2721			  1 = /dev/vx/dmp/*		Second multipath device
2722			    ...
2723	
2724			The namespace in these directories is maintained by
2725			the user space VxVM software.
2726	
2727	202 char	CPU model-specific registers
2728			  0 = /dev/cpu/0/msr		MSRs on CPU 0
2729			  1 = /dev/cpu/1/msr		MSRs on CPU 1
2730			    ...
2731	
2732	202 block	Xen Virtual Block Device
2733			  0 = /dev/xvda       First Xen VBD whole disk
2734			  16 = /dev/xvdb      Second Xen VBD whole disk
2735			  32 = /dev/xvdc      Third Xen VBD whole disk
2736			    ...
2737			  240 = /dev/xvdp     Sixteenth Xen VBD whole disk
2738	
2739	                Partitions are handled in the same way as for IDE
2740	                disks (see major number 3) except that the limit on
2741	                partitions is 15.
2742	
2743	203 char	CPU CPUID information
2744			  0 = /dev/cpu/0/cpuid		CPUID on CPU 0
2745			  1 = /dev/cpu/1/cpuid		CPUID on CPU 1
2746			    ...
2747	
2748	204 char	Low-density serial ports
2749			  0 = /dev/ttyLU0		LinkUp Systems L72xx UART - port 0
2750			  1 = /dev/ttyLU1		LinkUp Systems L72xx UART - port 1
2751			  2 = /dev/ttyLU2		LinkUp Systems L72xx UART - port 2
2752			  3 = /dev/ttyLU3		LinkUp Systems L72xx UART - port 3
2753			  4 = /dev/ttyFB0		Intel Footbridge (ARM)
2754			  5 = /dev/ttySA0		StrongARM builtin serial port 0
2755			  6 = /dev/ttySA1		StrongARM builtin serial port 1
2756			  7 = /dev/ttySA2		StrongARM builtin serial port 2
2757			  8 = /dev/ttySC0		SCI serial port (SuperH) - port 0
2758			  9 = /dev/ttySC1		SCI serial port (SuperH) - port 1
2759			 10 = /dev/ttySC2		SCI serial port (SuperH) - port 2
2760			 11 = /dev/ttySC3		SCI serial port (SuperH) - port 3
2761			 12 = /dev/ttyFW0		Firmware console - port 0
2762			 13 = /dev/ttyFW1		Firmware console - port 1
2763			 14 = /dev/ttyFW2		Firmware console - port 2
2764			 15 = /dev/ttyFW3		Firmware console - port 3
2765			 16 = /dev/ttyAM0		ARM "AMBA" serial port 0
2766			    ...
2767			 31 = /dev/ttyAM15		ARM "AMBA" serial port 15
2768			 32 = /dev/ttyDB0		DataBooster serial port 0
2769			    ...
2770			 39 = /dev/ttyDB7		DataBooster serial port 7
2771			 40 = /dev/ttySG0		SGI Altix console port
2772			 41 = /dev/ttySMX0		Motorola i.MX - port 0
2773			 42 = /dev/ttySMX1		Motorola i.MX - port 1
2774			 43 = /dev/ttySMX2		Motorola i.MX - port 2
2775			 44 = /dev/ttyMM0		Marvell MPSC - port 0
2776			 45 = /dev/ttyMM1		Marvell MPSC - port 1
2777			 46 = /dev/ttyCPM0		PPC CPM (SCC or SMC) - port 0
2778			    ...
2779			 47 = /dev/ttyCPM5		PPC CPM (SCC or SMC) - port 5
2780			 50 = /dev/ttyIOC0		Altix serial card
2781			    ...
2782			 81 = /dev/ttyIOC31		Altix serial card
2783			 82 = /dev/ttyVR0		NEC VR4100 series SIU
2784			 83 = /dev/ttyVR1		NEC VR4100 series DSIU
2785			 84 = /dev/ttyIOC84		Altix ioc4 serial card
2786			    ...
2787			 115 = /dev/ttyIOC115		Altix ioc4 serial card
2788			 116 = /dev/ttySIOC0		Altix ioc3 serial card
2789			    ...
2790			 147 = /dev/ttySIOC31		Altix ioc3 serial card
2791			 148 = /dev/ttyPSC0		PPC PSC - port 0
2792			    ...
2793			 153 = /dev/ttyPSC5		PPC PSC - port 5
2794			 154 = /dev/ttyAT0		ATMEL serial port 0
2795			    ...
2796			 169 = /dev/ttyAT15		ATMEL serial port 15
2797			 170 = /dev/ttyNX0		Hilscher netX serial port 0
2798			    ...
2799			 185 = /dev/ttyNX15		Hilscher netX serial port 15
2800			 186 = /dev/ttyJ0		JTAG1 DCC protocol based serial port emulation
2801			 187 = /dev/ttyUL0		Xilinx uartlite - port 0
2802			    ...
2803			 190 = /dev/ttyUL3		Xilinx uartlite - port 3
2804			 191 = /dev/xvc0		Xen virtual console - port 0
2805			 192 = /dev/ttyPZ0		pmac_zilog - port 0
2806			    ...
2807			 195 = /dev/ttyPZ3		pmac_zilog - port 3
2808			 196 = /dev/ttyTX0		TX39/49 serial port 0
2809			    ...
2810			 204 = /dev/ttyTX7		TX39/49 serial port 7
2811			 205 = /dev/ttySC0		SC26xx serial port 0
2812			 206 = /dev/ttySC1		SC26xx serial port 1
2813			 207 = /dev/ttySC2		SC26xx serial port 2
2814			 208 = /dev/ttySC3		SC26xx serial port 3
2815			 209 = /dev/ttyMAX0		MAX3100 serial port 0
2816			 210 = /dev/ttyMAX1		MAX3100 serial port 1
2817			 211 = /dev/ttyMAX2		MAX3100 serial port 2
2818			 212 = /dev/ttyMAX3		MAX3100 serial port 3
2819	
2820	205 char	Low-density serial ports (alternate device)
2821			  0 = /dev/culu0		Callout device for ttyLU0
2822			  1 = /dev/culu1		Callout device for ttyLU1
2823			  2 = /dev/culu2		Callout device for ttyLU2
2824			  3 = /dev/culu3		Callout device for ttyLU3
2825			  4 = /dev/cufb0		Callout device for ttyFB0
2826			  5 = /dev/cusa0		Callout device for ttySA0
2827			  6 = /dev/cusa1		Callout device for ttySA1
2828			  7 = /dev/cusa2		Callout device for ttySA2
2829			  8 = /dev/cusc0		Callout device for ttySC0
2830			  9 = /dev/cusc1		Callout device for ttySC1
2831			 10 = /dev/cusc2		Callout device for ttySC2
2832			 11 = /dev/cusc3		Callout device for ttySC3
2833			 12 = /dev/cufw0		Callout device for ttyFW0
2834			 13 = /dev/cufw1		Callout device for ttyFW1
2835			 14 = /dev/cufw2		Callout device for ttyFW2
2836			 15 = /dev/cufw3		Callout device for ttyFW3
2837			 16 = /dev/cuam0		Callout device for ttyAM0
2838			    ...
2839			 31 = /dev/cuam15		Callout device for ttyAM15
2840			 32 = /dev/cudb0		Callout device for ttyDB0
2841			    ...
2842			 39 = /dev/cudb7		Callout device for ttyDB7
2843			 40 = /dev/cusg0		Callout device for ttySG0
2844			 41 = /dev/ttycusmx0		Callout device for ttySMX0
2845			 42 = /dev/ttycusmx1		Callout device for ttySMX1
2846			 43 = /dev/ttycusmx2		Callout device for ttySMX2
2847			 46 = /dev/cucpm0		Callout device for ttyCPM0
2848			    ...
2849			 49 = /dev/cucpm5		Callout device for ttyCPM5
2850			 50 = /dev/cuioc40		Callout device for ttyIOC40
2851			    ...
2852			 81 = /dev/cuioc431		Callout device for ttyIOC431
2853			 82 = /dev/cuvr0		Callout device for ttyVR0
2854			 83 = /dev/cuvr1		Callout device for ttyVR1
2855	
2856	206 char	OnStream SC-x0 tape devices
2857			  0 = /dev/osst0		First OnStream SCSI tape, mode 0
2858			  1 = /dev/osst1		Second OnStream SCSI tape, mode 0
2859			    ...
2860			 32 = /dev/osst0l		First OnStream SCSI tape, mode 1
2861			 33 = /dev/osst1l		Second OnStream SCSI tape, mode 1
2862			    ...
2863			 64 = /dev/osst0m		First OnStream SCSI tape, mode 2
2864			 65 = /dev/osst1m		Second OnStream SCSI tape, mode 2
2865			    ...
2866			 96 = /dev/osst0a		First OnStream SCSI tape, mode 3
2867			 97 = /dev/osst1a		Second OnStream SCSI tape, mode 3
2868			    ...
2869			128 = /dev/nosst0		No rewind version of /dev/osst0
2870			129 = /dev/nosst1		No rewind version of /dev/osst1
2871			    ...
2872			160 = /dev/nosst0l		No rewind version of /dev/osst0l
2873			161 = /dev/nosst1l		No rewind version of /dev/osst1l
2874			    ...
2875			192 = /dev/nosst0m		No rewind version of /dev/osst0m
2876			193 = /dev/nosst1m		No rewind version of /dev/osst1m
2877			    ...
2878			224 = /dev/nosst0a		No rewind version of /dev/osst0a
2879			225 = /dev/nosst1a		No rewind version of /dev/osst1a
2880			    ...
2881	
2882			The OnStream SC-x0 SCSI tapes do not support the
2883			standard SCSI SASD command set and therefore need
2884			their own driver "osst". Note that the IDE, USB (and
2885			maybe ParPort) versions may be driven via ide-scsi or
2886			usb-storage SCSI emulation and this osst device and
2887			driver as well.  The ADR-x0 drives are QIC-157
2888			compliant and don't need osst.
2889	
2890	207 char	Compaq ProLiant health feature indicate
2891			  0 = /dev/cpqhealth/cpqw	Redirector interface
2892			  1 = /dev/cpqhealth/crom	EISA CROM
2893			  2 = /dev/cpqhealth/cdt	Data Table
2894			  3 = /dev/cpqhealth/cevt	Event Log
2895			  4 = /dev/cpqhealth/casr	Automatic Server Recovery
2896			  5 = /dev/cpqhealth/cecc	ECC Memory
2897			  6 = /dev/cpqhealth/cmca	Machine Check Architecture
2898			  7 = /dev/cpqhealth/ccsm	Deprecated CDT
2899			  8 = /dev/cpqhealth/cnmi	NMI Handling
2900			  9 = /dev/cpqhealth/css	Sideshow Management
2901			 10 = /dev/cpqhealth/cram	CMOS interface
2902			 11 = /dev/cpqhealth/cpci	PCI IRQ interface
2903	
2904	208 char	User space serial ports
2905			  0 = /dev/ttyU0		First user space serial port
2906			  1 = /dev/ttyU1		Second user space serial port
2907			    ...
2908	
2909	209 char	User space serial ports (alternate devices)
2910			  0 = /dev/cuu0			Callout device for ttyU0
2911			  1 = /dev/cuu1			Callout device for ttyU1
2912			    ...
2913	
2914	210 char	SBE, Inc. sync/async serial card
2915			  0 = /dev/sbei/wxcfg0		Configuration device for board 0
2916			  1 = /dev/sbei/dld0		Download device for board 0
2917			  2 = /dev/sbei/wan00		WAN device, port 0, board 0
2918			  3 = /dev/sbei/wan01		WAN device, port 1, board 0
2919			  4 = /dev/sbei/wan02		WAN device, port 2, board 0
2920			  5 = /dev/sbei/wan03		WAN device, port 3, board 0
2921			  6 = /dev/sbei/wanc00		WAN clone device, port 0, board 0
2922			  7 = /dev/sbei/wanc01		WAN clone device, port 1, board 0
2923			  8 = /dev/sbei/wanc02		WAN clone device, port 2, board 0
2924			  9 = /dev/sbei/wanc03		WAN clone device, port 3, board 0
2925			 10 = /dev/sbei/wxcfg1		Configuration device for board 1
2926			 11 = /dev/sbei/dld1		Download device for board 1
2927			 12 = /dev/sbei/wan10		WAN device, port 0, board 1
2928			 13 = /dev/sbei/wan11		WAN device, port 1, board 1
2929			 14 = /dev/sbei/wan12		WAN device, port 2, board 1
2930			 15 = /dev/sbei/wan13		WAN device, port 3, board 1
2931			 16 = /dev/sbei/wanc10		WAN clone device, port 0, board 1
2932			 17 = /dev/sbei/wanc11		WAN clone device, port 1, board 1
2933			 18 = /dev/sbei/wanc12		WAN clone device, port 2, board 1
2934			 19 = /dev/sbei/wanc13		WAN clone device, port 3, board 1
2935			    ...
2936	
2937			Yes, each board is really spaced 10 (decimal) apart.
2938	
2939	211 char	Addinum CPCI1500 digital I/O card
2940			  0 = /dev/addinum/cpci1500/0	First CPCI1500 card
2941			  1 = /dev/addinum/cpci1500/1	Second CPCI1500 card
2942			    ...
2943	
2944	212 char	LinuxTV.org DVB driver subsystem
2945			  0 = /dev/dvb/adapter0/video0    first video decoder of first card
2946			  1 = /dev/dvb/adapter0/audio0    first audio decoder of first card
2947			  2 = /dev/dvb/adapter0/sec0      (obsolete/unused)
2948			  3 = /dev/dvb/adapter0/frontend0 first frontend device of first card
2949			  4 = /dev/dvb/adapter0/demux0    first demux device of first card
2950			  5 = /dev/dvb/adapter0/dvr0      first digital video recoder device of first card
2951			  6 = /dev/dvb/adapter0/ca0       first common access port of first card
2952			  7 = /dev/dvb/adapter0/net0      first network device of first card
2953			  8 = /dev/dvb/adapter0/osd0      first on-screen-display device of first card
2954			  9 = /dev/dvb/adapter0/video1    second video decoder of first card
2955			    ...
2956			 64 = /dev/dvb/adapter1/video0    first video decoder of second card
2957			    ...
2958			128 = /dev/dvb/adapter2/video0    first video decoder of third card
2959			    ...
2960			196 = /dev/dvb/adapter3/video0    first video decoder of fourth card
2961	
2962	216 char	Bluetooth RFCOMM TTY devices
2963			  0 = /dev/rfcomm0		First Bluetooth RFCOMM TTY device
2964			  1 = /dev/rfcomm1		Second Bluetooth RFCOMM TTY device
2965			    ...
2966	
2967	217 char	Bluetooth RFCOMM TTY devices (alternate devices)
2968			  0 = /dev/curf0		Callout device for rfcomm0
2969			  1 = /dev/curf1		Callout device for rfcomm1
2970			    ...
2971	
2972	218 char	The Logical Company bus Unibus/Qbus adapters
2973			  0 = /dev/logicalco/bci/0	First bus adapter
2974			  1 = /dev/logicalco/bci/1	First bus adapter
2975			    ...
2976	
2977	219 char	The Logical Company DCI-1300 digital I/O card
2978			  0 = /dev/logicalco/dci1300/0	First DCI-1300 card
2979			  1 = /dev/logicalco/dci1300/1	Second DCI-1300 card
2980			    ...
2981	
2982	220 char	Myricom Myrinet "GM" board
2983			  0 = /dev/myricom/gm0		First Myrinet GM board
2984			  1 = /dev/myricom/gmp0		First board "root access"
2985			  2 = /dev/myricom/gm1		Second Myrinet GM board
2986			  3 = /dev/myricom/gmp1		Second board "root access"
2987			    ...
2988	
2989	221 char	VME bus
2990			  0 = /dev/bus/vme/m0		First master image
2991			  1 = /dev/bus/vme/m1		Second master image
2992			  2 = /dev/bus/vme/m2		Third master image
2993			  3 = /dev/bus/vme/m3		Fourth master image
2994			  4 = /dev/bus/vme/s0		First slave image
2995			  5 = /dev/bus/vme/s1		Second slave image
2996			  6 = /dev/bus/vme/s2		Third slave image
2997			  7 = /dev/bus/vme/s3		Fourth slave image
2998			  8 = /dev/bus/vme/ctl		Control
2999	
3000			It is expected that all VME bus drivers will use the
3001			same interface.  For interface documentation see
3002			http://www.vmelinux.org/.
3003	
3004	224 char	A2232 serial card
3005			  0 = /dev/ttyY0		First A2232 port
3006			  1 = /dev/ttyY1		Second A2232 port
3007			    ...
3008	
3009	225 char	A2232 serial card (alternate devices)
3010			  0 = /dev/cuy0			Callout device for ttyY0
3011			  1 = /dev/cuy1			Callout device for ttyY1
3012			    ...
3013	
3014	226 char	Direct Rendering Infrastructure (DRI)
3015			  0 = /dev/dri/card0		First graphics card
3016			  1 = /dev/dri/card1		Second graphics card
3017			    ...
3018	
3019	227 char	IBM 3270 terminal Unix tty access
3020			  1 = /dev/3270/tty1		First 3270 terminal
3021			  2 = /dev/3270/tty2		Seconds 3270 terminal
3022			    ...
3023	
3024	228 char	IBM 3270 terminal block-mode access
3025			  0 = /dev/3270/tub		Controlling interface
3026			  1 = /dev/3270/tub1		First 3270 terminal
3027			  2 = /dev/3270/tub2		Second 3270 terminal
3028			    ...
3029	
3030	229 char	IBM iSeries/pSeries virtual console
3031			  0 = /dev/hvc0			First console port
3032			  1 = /dev/hvc1			Second console port
3033			    ...
3034	
3035	230 char	IBM iSeries virtual tape
3036			  0 = /dev/iseries/vt0		First virtual tape, mode 0
3037			  1 = /dev/iseries/vt1		Second virtual tape, mode 0
3038			    ...
3039			 32 = /dev/iseries/vt0l		First virtual tape, mode 1
3040			 33 = /dev/iseries/vt1l		Second virtual tape, mode 1
3041			    ...
3042			 64 = /dev/iseries/vt0m		First virtual tape, mode 2
3043			 65 = /dev/iseries/vt1m		Second virtual tape, mode 2
3044			    ...
3045			 96 = /dev/iseries/vt0a		First virtual tape, mode 3
3046			 97 = /dev/iseries/vt1a		Second virtual tape, mode 3
3047			      ...
3048			128 = /dev/iseries/nvt0		First virtual tape, mode 0, no rewind
3049			129 = /dev/iseries/nvt1		Second virtual tape, mode 0, no rewind
3050			    ...
3051			160 = /dev/iseries/nvt0l	First virtual tape, mode 1, no rewind
3052			161 = /dev/iseries/nvt1l	Second virtual tape, mode 1, no rewind
3053			    ...
3054			192 = /dev/iseries/nvt0m	First virtual tape, mode 2, no rewind
3055			193 = /dev/iseries/nvt1m	Second virtual tape, mode 2, no rewind
3056			    ...
3057			224 = /dev/iseries/nvt0a	First virtual tape, mode 3, no rewind
3058			225 = /dev/iseries/nvt1a	Second virtual tape, mode 3, no rewind
3059			    ...
3060	
3061			"No rewind" refers to the omission of the default
3062			automatic rewind on device close.  The MTREW or MTOFFL
3063			ioctl()'s can be used to rewind the tape regardless of
3064			the device used to access it.
3065	
3066	231 char	InfiniBand
3067			0 = /dev/infiniband/umad0
3068			1 = /dev/infiniband/umad1
3069			  ...
3070			63 = /dev/infiniband/umad63    63rd InfiniBandMad device
3071			64 = /dev/infiniband/issm0     First InfiniBand IsSM device
3072			65 = /dev/infiniband/issm1     Second InfiniBand IsSM device
3073			  ...
3074			127 = /dev/infiniband/issm63    63rd InfiniBand IsSM device
3075			128 = /dev/infiniband/uverbs0   First InfiniBand verbs device
3076			129 = /dev/infiniband/uverbs1   Second InfiniBand verbs device
3077			  ...
3078			159 = /dev/infiniband/uverbs31  31st InfiniBand verbs device
3079	
3080	232 char	Biometric Devices
3081			0 = /dev/biometric/sensor0/fingerprint	first fingerprint sensor on first device
3082			1 = /dev/biometric/sensor0/iris		first iris sensor on first device
3083			2 = /dev/biometric/sensor0/retina	first retina sensor on first device
3084			3 = /dev/biometric/sensor0/voiceprint	first voiceprint sensor on first device
3085			4 = /dev/biometric/sensor0/facial	first facial sensor on first device
3086			5 = /dev/biometric/sensor0/hand		first hand sensor on first device
3087			  ...
3088			10 = /dev/biometric/sensor1/fingerprint	first fingerprint sensor on second device
3089			  ...
3090			20 = /dev/biometric/sensor2/fingerprint	first fingerprint sensor on third device
3091			  ...
3092	
3093	233 char	PathScale InfiniPath interconnect
3094			0 = /dev/ipath        Primary device for programs (any unit)
3095			1 = /dev/ipath0       Access specifically to unit 0
3096			2 = /dev/ipath1       Access specifically to unit 1
3097			  ...
3098			4 = /dev/ipath3       Access specifically to unit 3
3099			129 = /dev/ipath_sma    Device used by Subnet Management Agent
3100			130 = /dev/ipath_diag   Device used by diagnostics programs
3101	
3102	234-239		UNASSIGNED
3103	
3104	240-254 char	LOCAL/EXPERIMENTAL USE
3105	
3106	240-254 block	LOCAL/EXPERIMENTAL USE
3107			Allocated for local/experimental use.  For devices not
3108			assigned official numbers, these ranges should be
3109			used in order to avoid conflicting with future assignments.
3110	
3111	255 char	RESERVED
3112	
3113	255 block	RESERVED
3114	
3115			This major is reserved to assist the expansion to a
3116			larger number space.  No device nodes with this major
3117			should ever be created on the filesystem.
3118			(This is probably not true anymore, but I'll leave it
3119			for now /Torben)
3120	
3121	---LARGE MAJORS!!!!!---
3122	
3123	256 char	Equinox SST multi-port serial boards
3124			   0 = /dev/ttyEQ0	First serial port on first Equinox SST board
3125			 127 = /dev/ttyEQ127	Last serial port on first Equinox SST board
3126			 128 = /dev/ttyEQ128	First serial port on second Equinox SST board
3127			  ...
3128			1027 = /dev/ttyEQ1027	Last serial port on eighth Equinox SST board
3129	
3130	256 block	Resident Flash Disk Flash Translation Layer
3131			  0 = /dev/rfda		First RFD FTL layer
3132			 16 = /dev/rfdb		Second RFD FTL layer
3133			  ...
3134			240 = /dev/rfdp		16th RFD FTL layer
3135	
3136	257 char	Phoenix Technologies Cryptographic Services Driver
3137			  0 = /dev/ptlsec	Crypto Services Driver
3138	
3139	257 block	SSFDC Flash Translation Layer filesystem
3140			  0 = /dev/ssfdca	First SSFDC layer
3141			  8 = /dev/ssfdcb	Second SSFDC layer
3142			 16 = /dev/ssfdcc	Third SSFDC layer
3143			 24 = /dev/ssfdcd	4th SSFDC layer
3144			 32 = /dev/ssfdce	5th SSFDC layer
3145			 40 = /dev/ssfdcf	6th SSFDC layer
3146			 48 = /dev/ssfdcg	7th SSFDC layer
3147			 56 = /dev/ssfdch	8th SSFDC layer
3148	
3149	258 block	ROM/Flash read-only translation layer
3150			  0 = /dev/blockrom0	First ROM card's translation layer interface
3151			  1 = /dev/blockrom1	Second ROM card's translation layer interface
3152			  ...
3153	
3154	259 block	Block Extended Major
3155			  Used dynamically to hold additional partition minor
3156			  numbers and allow large numbers of partitions per device
3157	
3158	259 char	FPGA configuration interfaces
3159			  0 = /dev/icap0	First Xilinx internal configuration
3160			  1 = /dev/icap1	Second Xilinx internal configuration
3161	
3162	260 char	OSD (Object-based-device) SCSI Device
3163			  0 = /dev/osd0		First OSD Device
3164			  1 = /dev/osd1		Second OSD Device
3165			  ...
3166			  255 = /dev/osd255	256th OSD Device
3167	
3168	 ****	ADDITIONAL /dev DIRECTORY ENTRIES
3169	
3170	This section details additional entries that should or may exist in
3171	the /dev directory.  It is preferred that symbolic links use the same
3172	form (absolute or relative) as is indicated here.  Links are
3173	classified as "hard" or "symbolic" depending on the preferred type of
3174	link; if possible, the indicated type of link should be used.
3175	
3176	
3177		Compulsory links
3178	
3179	These links should exist on all systems:
3180	
3181	/dev/fd		/proc/self/fd	symbolic	File descriptors
3182	/dev/stdin	fd/0		symbolic	stdin file descriptor
3183	/dev/stdout	fd/1		symbolic	stdout file descriptor
3184	/dev/stderr	fd/2		symbolic	stderr file descriptor
3185	/dev/nfsd	socksys		symbolic	Required by iBCS-2
3186	/dev/X0R	null		symbolic	Required by iBCS-2
3187	
3188	Note: /dev/X0R is <letter X>-<digit 0>-<letter R>.
3189	
3190		Recommended links
3191	
3192	It is recommended that these links exist on all systems:
3193	
3194	/dev/core	/proc/kcore	symbolic	Backward compatibility
3195	/dev/ramdisk	ram0		symbolic	Backward compatibility
3196	/dev/ftape	qft0		symbolic	Backward compatibility
3197	/dev/bttv0	video0		symbolic	Backward compatibility
3198	/dev/radio	radio0		symbolic	Backward compatibility
3199	/dev/i2o*	/dev/i2o/*	symbolic	Backward compatibility
3200	/dev/scd?	sr?		hard		Alternate SCSI CD-ROM name
3201	
3202		Locally defined links
3203	
3204	The following links may be established locally to conform to the
3205	configuration of the system.  This is merely a tabulation of existing
3206	practice, and does not constitute a recommendation.  However, if they
3207	exist, they should have the following uses.
3208	
3209	/dev/mouse	mouse port	symbolic	Current mouse device
3210	/dev/tape	tape device	symbolic	Current tape device
3211	/dev/cdrom	CD-ROM device	symbolic	Current CD-ROM device
3212	/dev/cdwriter	CD-writer	symbolic	Current CD-writer device
3213	/dev/scanner	scanner		symbolic	Current scanner device
3214	/dev/modem	modem port	symbolic	Current dialout device
3215	/dev/root	root device	symbolic	Current root filesystem
3216	/dev/swap	swap device	symbolic	Current swap device
3217	
3218	/dev/modem should not be used for a modem which supports dialin as
3219	well as dialout, as it tends to cause lock file problems.  If it
3220	exists, /dev/modem should point to the appropriate primary TTY device
3221	(the use of the alternate callout devices is deprecated).
3222	
3223	For SCSI devices, /dev/tape and /dev/cdrom should point to the
3224	``cooked'' devices (/dev/st* and /dev/sr*, respectively), whereas
3225	/dev/cdwriter and /dev/scanner should point to the appropriate generic
3226	SCSI devices (/dev/sg*).
3227	
3228	/dev/mouse may point to a primary serial TTY device, a hardware mouse
3229	device, or a socket for a mouse driver program (e.g. /dev/gpmdata).
3230	
3231		Sockets and pipes
3232	
3233	Non-transient sockets and named pipes may exist in /dev.  Common entries are:
3234	
3235	/dev/printer	socket		lpd local socket
3236	/dev/log	socket		syslog local socket
3237	/dev/gpmdata	socket		gpm mouse multiplexer
3238	
3239		Mount points
3240	
3241	The following names are reserved for mounting special filesystems
3242	under /dev.  These special filesystems provide kernel interfaces that
3243	cannot be provided with standard device nodes.
3244	
3245	/dev/pts	devpts		PTY slave filesystem
3246	/dev/shm	tmpfs		POSIX shared memory maintenance access
3247	
3248	 ****	TERMINAL DEVICES
3249	
3250	Terminal, or TTY devices are a special class of character devices.  A
3251	terminal device is any device that could act as a controlling terminal
3252	for a session; this includes virtual consoles, serial ports, and
3253	pseudoterminals (PTYs).
3254	
3255	All terminal devices share a common set of capabilities known as line
3256	disciplines; these include the common terminal line discipline as well
3257	as SLIP and PPP modes.
3258	
3259	All terminal devices are named similarly; this section explains the
3260	naming and use of the various types of TTYs.  Note that the naming
3261	conventions include several historical warts; some of these are
3262	Linux-specific, some were inherited from other systems, and some
3263	reflect Linux outgrowing a borrowed convention.
3264	
3265	A hash mark (#) in a device name is used here to indicate a decimal
3266	number without leading zeroes.
3267	
3268		Virtual consoles and the console device
3269	
3270	Virtual consoles are full-screen terminal displays on the system video
3271	monitor.  Virtual consoles are named /dev/tty#, with numbering
3272	starting at /dev/tty1; /dev/tty0 is the current virtual console.
3273	/dev/tty0 is the device that should be used to access the system video
3274	card on those architectures for which the frame buffer devices
3275	(/dev/fb*) are not applicable.	Do not use /dev/console
3276	for this purpose.
3277	
3278	The console device, /dev/console, is the device to which system
3279	messages should be sent, and on which logins should be permitted in
3280	single-user mode.  Starting with Linux 2.1.71, /dev/console is managed
3281	by the kernel; for previous versions it should be a symbolic link to
3282	either /dev/tty0, a specific virtual console such as /dev/tty1, or to
3283	a serial port primary (tty*, not cu*) device, depending on the
3284	configuration of the system.
3285	
3286		Serial ports
3287	
3288	Serial ports are RS-232 serial ports and any device which simulates
3289	one, either in hardware (such as internal modems) or in software (such
3290	as the ISDN driver.)  Under Linux, each serial ports has two device
3291	names, the primary or callin device and the alternate or callout one.
3292	Each kind of device is indicated by a different letter.	 For any
3293	letter X, the names of the devices are /dev/ttyX# and /dev/cux#,
3294	respectively; for historical reasons, /dev/ttyS# and /dev/ttyC#
3295	correspond to /dev/cua# and /dev/cub#.	In the future, it should be
3296	expected that multiple letters will be used; all letters will be upper
3297	case for the "tty" device (e.g. /dev/ttyDP#) and lower case for the
3298	"cu" device (e.g. /dev/cudp#).
3299	
3300	The names /dev/ttyQ# and /dev/cuq# are reserved for local use.
3301	
3302	The alternate devices provide for kernel-based exclusion and somewhat
3303	different defaults than the primary devices.  Their main purpose is to
3304	allow the use of serial ports with programs with no inherent or broken
3305	support for serial ports.  Their use is deprecated, and they may be
3306	removed from a future version of Linux.
3307	
3308	Arbitration of serial ports is provided by the use of lock files with
3309	the names /var/lock/LCK..ttyX#.	 The contents of the lock file should
3310	be the PID of the locking process as an ASCII number.
3311	
3312	It is common practice to install links such as /dev/modem
3313	which point to serial ports.  In order to ensure proper locking in the
3314	presence of these links, it is recommended that software chase
3315	symlinks and lock all possible names; additionally, it is recommended
3316	that a lock file be installed with the corresponding alternate
3317	device.	 In order to avoid deadlocks, it is recommended that the locks
3318	are acquired in the following order, and released in the reverse:
3319	
3320		1. The symbolic link name, if any (/var/lock/LCK..modem)
3321		2. The "tty" name (/var/lock/LCK..ttyS2)
3322		3. The alternate device name (/var/lock/LCK..cua2)
3323	
3324	In the case of nested symbolic links, the lock files should be
3325	installed in the order the symlinks are resolved.
3326	
3327	Under no circumstances should an application hold a lock while waiting
3328	for another to be released.  In addition, applications which attempt
3329	to create lock files for the corresponding alternate device names
3330	should take into account the possibility of being used on a non-serial
3331	port TTY, for which no alternate device would exist.
3332	
3333		Pseudoterminals (PTYs)
3334	
3335	Pseudoterminals, or PTYs, are used to create login sessions or provide
3336	other capabilities requiring a TTY line discipline (including SLIP or
3337	PPP capability) to arbitrary data-generation processes.	 Each PTY has
3338	a master side, named /dev/pty[p-za-e][0-9a-f], and a slave side, named
3339	/dev/tty[p-za-e][0-9a-f].  The kernel arbitrates the use of PTYs by
3340	allowing each master side to be opened only once.
3341	
3342	Once the master side has been opened, the corresponding slave device
3343	can be used in the same manner as any TTY device.  The master and
3344	slave devices are connected by the kernel, generating the equivalent
3345	of a bidirectional pipe with TTY capabilities.
3346	
3347	Recent versions of the Linux kernels and GNU libc contain support for
3348	the System V/Unix98 naming scheme for PTYs, which assigns a common
3349	device, /dev/ptmx, to all the masters (opening it will automatically
3350	give you a previously unassigned PTY) and a subdirectory, /dev/pts,
3351	for the slaves; the slaves are named with decimal integers (/dev/pts/#
3352	in our notation).  This removes the problem of exhausting the
3353	namespace and enables the kernel to automatically create the device
3354	nodes for the slaves on demand using the "devpts" filesystem.
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