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Based on kernel version 3.13. Page generated on 2014-01-20 22:00 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17	The LaTeX version of this document is no longer maintained.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26	The symbol {2.6} means the allocation is obsolete and scheduled for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			139 = /dev/openprom	SPARC OpenBoot PROM
357			140 = /dev/relay8	Berkshire Products Octal relay card
358			141 = /dev/relay16	Berkshire Products ISO-16 relay card
359			142 =
360			143 = /dev/pciconf	PCI configuration space
361			144 = /dev/nvram	Non-volatile configuration RAM
362			145 = /dev/hfmodem	Soundcard shortwave modem control
363			146 = /dev/graphics	Linux/SGI graphics device
364			147 = /dev/opengl	Linux/SGI OpenGL pipe
365			148 = /dev/gfx		Linux/SGI graphics effects device
366			149 = /dev/input/mouse	Linux/SGI Irix emulation mouse
367			150 = /dev/input/keyboard Linux/SGI Irix emulation keyboard
368			151 = /dev/led		Front panel LEDs
369			152 = /dev/kpoll	Kernel Poll Driver
370			153 = /dev/mergemem	Memory merge device
371			154 = /dev/pmu		Macintosh PowerBook power manager
372			155 = /dev/isictl	MultiTech ISICom serial control
373			156 = /dev/lcd		Front panel LCD display
374			157 = /dev/ac		Applicom Intl Profibus card
375			158 = /dev/nwbutton	Netwinder external button
376			159 = /dev/nwdebug	Netwinder debug interface
377			160 = /dev/nwflash	Netwinder flash memory
378			161 = /dev/userdma	User-space DMA access
379			162 = /dev/smbus	System Management Bus
380			163 = /dev/lik		Logitech Internet Keyboard
381			164 = /dev/ipmo		Intel Intelligent Platform Management
382			165 = /dev/vmmon	VMware virtual machine monitor
383			166 = /dev/i2o/ctl	I2O configuration manager
384			167 = /dev/specialix_sxctl Specialix serial control
385			168 = /dev/tcldrv	Technology Concepts serial control
386			169 = /dev/specialix_rioctl Specialix RIO serial control
387			170 = /dev/thinkpad/thinkpad	IBM Thinkpad devices
388			171 = /dev/srripc	QNX4 API IPC manager
389			172 = /dev/usemaclone	Semaphore clone device
390			173 = /dev/ipmikcs	Intelligent Platform Management
391			174 = /dev/uctrl	SPARCbook 3 microcontroller
392			175 = /dev/agpgart	AGP Graphics Address Remapping Table
393			176 = /dev/gtrsc	Gorgy Timing radio clock
394			177 = /dev/cbm		Serial CBM bus
395			178 = /dev/jsflash	JavaStation OS flash SIMM
396			179 = /dev/xsvc		High-speed shared-mem/semaphore service
397			180 = /dev/vrbuttons	Vr41xx button input device
398			181 = /dev/toshiba	Toshiba laptop SMM support
399			182 = /dev/perfctr	Performance-monitoring counters
400			183 = /dev/hwrng	Generic random number generator
401			184 = /dev/cpu/microcode CPU microcode update interface
402			186 = /dev/atomicps	Atomic shapshot of process state data
403			187 = /dev/irnet	IrNET device
404			188 = /dev/smbusbios	SMBus BIOS
405			189 = /dev/ussp_ctl	User space serial port control
406			190 = /dev/crash	Mission Critical Linux crash dump facility
407			191 = /dev/pcl181	<information missing>
408			192 = /dev/nas_xbus	NAS xbus LCD/buttons access
409			193 = /dev/d7s		SPARC 7-segment display
410			194 = /dev/zkshim	Zero-Knowledge network shim control
411			195 = /dev/elographics/e2201	Elographics touchscreen E271-2201
412			198 = /dev/sexec	Signed executable interface
413			199 = /dev/scanners/cuecat :CueCat barcode scanner
414			200 = /dev/net/tun	TAP/TUN network device
415			201 = /dev/button/gulpb	Transmeta GULP-B buttons
416			202 = /dev/emd/ctl	Enhanced Metadisk RAID (EMD) control
417			203 = /dev/cuse		Cuse (character device in user-space)
418			204 = /dev/video/em8300		EM8300 DVD decoder control
419			205 = /dev/video/em8300_mv	EM8300 DVD decoder video
420			206 = /dev/video/em8300_ma	EM8300 DVD decoder audio
421			207 = /dev/video/em8300_sp	EM8300 DVD decoder subpicture
422			208 = /dev/compaq/cpqphpc	Compaq PCI Hot Plug Controller
423			209 = /dev/compaq/cpqrid	Compaq Remote Insight Driver
424			210 = /dev/impi/bt	IMPI coprocessor block transfer
425			211 = /dev/impi/smic	IMPI coprocessor stream interface
426			212 = /dev/watchdogs/0	First watchdog device
427			213 = /dev/watchdogs/1	Second watchdog device
428			214 = /dev/watchdogs/2	Third watchdog device
429			215 = /dev/watchdogs/3	Fourth watchdog device
430			216 = /dev/fujitsu/apanel	Fujitsu/Siemens application panel
431			217 = /dev/ni/natmotn		National Instruments Motion
432			218 = /dev/kchuid	Inter-process chuid control
433			219 = /dev/modems/mwave	MWave modem firmware upload
434			220 = /dev/mptctl	Message passing technology (MPT) control
435			221 = /dev/mvista/hssdsi	Montavista PICMG hot swap system driver
436			222 = /dev/mvista/hasi		Montavista PICMG high availability
437			223 = /dev/input/uinput		User level driver support for input
438			224 = /dev/tpm		TCPA TPM driver
439			225 = /dev/pps		Pulse Per Second driver
440			226 = /dev/systrace	Systrace device
441			227 = /dev/mcelog	X86_64 Machine Check Exception driver
442			228 = /dev/hpet		HPET driver
443			229 = /dev/fuse		Fuse (virtual filesystem in user-space)
444			230 = /dev/midishare	MidiShare driver
445			231 = /dev/snapshot	System memory snapshot device
446			232 = /dev/kvm		Kernel-based virtual machine (hardware virtualization extensions)
447			233 = /dev/kmview	View-OS A process with a view
448			234 = /dev/btrfs-control	Btrfs control device
449			235 = /dev/autofs	Autofs control device
450			236 = /dev/mapper/control	Device-Mapper control device
451			237 = /dev/loop-control Loopback control device
452			238 = /dev/vhost-net	Host kernel accelerator for virtio net
453	
454			240-254			Reserved for local use
455			255			Reserved for MISC_DYNAMIC_MINOR
456	
457	 11 char	Raw keyboard device	(Linux/SPARC only)
458			  0 = /dev/kbd		Raw keyboard device
459	
460	 11 char	Serial Mux device	(Linux/PA-RISC only)
461			  0 = /dev/ttyB0	First mux port
462			  1 = /dev/ttyB1	Second mux port
463			    ...
464	
465	 11 block	SCSI CD-ROM devices
466			  0 = /dev/scd0		First SCSI CD-ROM
467			  1 = /dev/scd1		Second SCSI CD-ROM
468			    ...
469	
470			The prefix /dev/sr (instead of /dev/scd) has been deprecated.
471	
472	 12 char	QIC-02 tape
473			  2 = /dev/ntpqic11	QIC-11, no rewind-on-close
474			  3 = /dev/tpqic11	QIC-11, rewind-on-close
475			  4 = /dev/ntpqic24	QIC-24, no rewind-on-close
476			  5 = /dev/tpqic24	QIC-24, rewind-on-close
477			  6 = /dev/ntpqic120	QIC-120, no rewind-on-close
478			  7 = /dev/tpqic120	QIC-120, rewind-on-close
479			  8 = /dev/ntpqic150	QIC-150, no rewind-on-close
480			  9 = /dev/tpqic150	QIC-150, rewind-on-close
481	
482			The device names specified are proposed -- if there
483			are "standard" names for these devices, please let me know.
484	
485	 12 block
486	
487	 13 char	Input core
488			  0 = /dev/input/js0	First joystick
489			  1 = /dev/input/js1	Second joystick
490			    ...
491			 32 = /dev/input/mouse0	First mouse
492			 33 = /dev/input/mouse1	Second mouse
493			    ...
494			 63 = /dev/input/mice	Unified mouse
495			 64 = /dev/input/event0	First event queue
496			 65 = /dev/input/event1	Second event queue
497			    ...
498	
499			Each device type has 5 bits (32 minors).
500	
501	 13 block	Previously used for the XT disk (/dev/xdN)
502			Deleted in kernel v3.9.
503	
504	 14 char	Open Sound System (OSS)
505			  0 = /dev/mixer	Mixer control
506			  1 = /dev/sequencer	Audio sequencer
507			  2 = /dev/midi00	First MIDI port
508			  3 = /dev/dsp		Digital audio
509			  4 = /dev/audio	Sun-compatible digital audio
510			  6 =
511			  7 = /dev/audioctl	SPARC audio control device
512			  8 = /dev/sequencer2	Sequencer -- alternate device
513			 16 = /dev/mixer1	Second soundcard mixer control
514			 17 = /dev/patmgr0	Sequencer patch manager
515			 18 = /dev/midi01	Second MIDI port
516			 19 = /dev/dsp1		Second soundcard digital audio
517			 20 = /dev/audio1	Second soundcard Sun digital audio
518			 33 = /dev/patmgr1	Sequencer patch manager
519			 34 = /dev/midi02	Third MIDI port
520			 50 = /dev/midi03	Fourth MIDI port
521	
522	 14 block
523	
524	 15 char	Joystick
525			  0 = /dev/js0		First analog joystick
526			  1 = /dev/js1		Second analog joystick
527			    ...
528			128 = /dev/djs0		First digital joystick
529			129 = /dev/djs1		Second digital joystick
530			    ...
531	 15 block	Sony CDU-31A/CDU-33A CD-ROM
532			  0 = /dev/sonycd	Sony CDU-31a CD-ROM
533	
534	 16 char	Non-SCSI scanners
535			  0 = /dev/gs4500	Genius 4500 handheld scanner
536	
537	 16 block	GoldStar CD-ROM
538			  0 = /dev/gscd		GoldStar CD-ROM
539	
540	 17 char	OBSOLETE (was Chase serial card)
541			  0 = /dev/ttyH0	First Chase port
542			  1 = /dev/ttyH1	Second Chase port
543			    ...
544	 17 block	Optics Storage CD-ROM
545			  0 = /dev/optcd	Optics Storage CD-ROM
546	
547	 18 char	OBSOLETE (was Chase serial card - alternate devices)
548			  0 = /dev/cuh0		Callout device for ttyH0
549			  1 = /dev/cuh1		Callout device for ttyH1
550			    ...
551	 18 block	Sanyo CD-ROM
552			  0 = /dev/sjcd		Sanyo CD-ROM
553	
554	 19 char	Cyclades serial card
555			  0 = /dev/ttyC0	First Cyclades port
556			    ...
557			 31 = /dev/ttyC31	32nd Cyclades port
558	
559	 19 block	"Double" compressed disk
560			  0 = /dev/double0	First compressed disk
561			    ...
562			  7 = /dev/double7	Eighth compressed disk
563			128 = /dev/cdouble0	Mirror of first compressed disk
564			    ...
565			135 = /dev/cdouble7	Mirror of eighth compressed disk
566	
567			See the Double documentation for the meaning of the
568			mirror devices.
569	
570	 20 char	Cyclades serial card - alternate devices
571			  0 = /dev/cub0		Callout device for ttyC0
572			    ...
573			 31 = /dev/cub31	Callout device for ttyC31
574	
575	 20 block	Hitachi CD-ROM (under development)
576			  0 = /dev/hitcd	Hitachi CD-ROM
577	
578	 21 char	Generic SCSI access
579			  0 = /dev/sg0		First generic SCSI device
580			  1 = /dev/sg1		Second generic SCSI device
581			    ...
582	
583			Most distributions name these /dev/sga, /dev/sgb...;
584			this sets an unnecessary limit of 26 SCSI devices in
585			the system and is counter to standard Linux
586			device-naming practice.
587	
588	 21 block	Acorn MFM hard drive interface
589			  0 = /dev/mfma		First MFM drive whole disk
590			 64 = /dev/mfmb		Second MFM drive whole disk
591	
592			This device is used on the ARM-based Acorn RiscPC.
593			Partitions are handled the same way as for IDE disks
594			(see major number 3).
595	
596	 22 char	Digiboard serial card
597			  0 = /dev/ttyD0	First Digiboard port
598			  1 = /dev/ttyD1	Second Digiboard port
599			    ...
600	 22 block	Second IDE hard disk/CD-ROM interface
601			  0 = /dev/hdc		Master: whole disk (or CD-ROM)
602			 64 = /dev/hdd		Slave: whole disk (or CD-ROM)
603	
604			Partitions are handled the same way as for the first
605			interface (see major number 3).
606	
607	 23 char	Digiboard serial card - alternate devices
608			  0 = /dev/cud0		Callout device for ttyD0
609			  1 = /dev/cud1		Callout device for ttyD1
610			      ...
611	 23 block	Mitsumi proprietary CD-ROM
612			  0 = /dev/mcd		Mitsumi CD-ROM
613	
614	 24 char	Stallion serial card
615			  0 = /dev/ttyE0	Stallion port 0 card 0
616			  1 = /dev/ttyE1	Stallion port 1 card 0
617			    ...
618			 64 = /dev/ttyE64	Stallion port 0 card 1
619			 65 = /dev/ttyE65	Stallion port 1 card 1
620			      ...
621			128 = /dev/ttyE128	Stallion port 0 card 2
622			129 = /dev/ttyE129	Stallion port 1 card 2
623			    ...
624			192 = /dev/ttyE192	Stallion port 0 card 3
625			193 = /dev/ttyE193	Stallion port 1 card 3
626			    ...
627	 24 block	Sony CDU-535 CD-ROM
628			  0 = /dev/cdu535	Sony CDU-535 CD-ROM
629	
630	 25 char	Stallion serial card - alternate devices
631			  0 = /dev/cue0		Callout device for ttyE0
632			  1 = /dev/cue1		Callout device for ttyE1
633			    ...
634			 64 = /dev/cue64	Callout device for ttyE64
635			 65 = /dev/cue65	Callout device for ttyE65
636			    ...
637			128 = /dev/cue128	Callout device for ttyE128
638			129 = /dev/cue129	Callout device for ttyE129
639			    ...
640			192 = /dev/cue192	Callout device for ttyE192
641			193 = /dev/cue193	Callout device for ttyE193
642			      ...
643	 25 block	First Matsushita (Panasonic/SoundBlaster) CD-ROM
644			  0 = /dev/sbpcd0	Panasonic CD-ROM controller 0 unit 0
645			  1 = /dev/sbpcd1	Panasonic CD-ROM controller 0 unit 1
646			  2 = /dev/sbpcd2	Panasonic CD-ROM controller 0 unit 2
647			  3 = /dev/sbpcd3	Panasonic CD-ROM controller 0 unit 3
648	
649	 26 char
650	
651	 26 block	Second Matsushita (Panasonic/SoundBlaster) CD-ROM
652			  0 = /dev/sbpcd4	Panasonic CD-ROM controller 1 unit 0
653			  1 = /dev/sbpcd5	Panasonic CD-ROM controller 1 unit 1
654			  2 = /dev/sbpcd6	Panasonic CD-ROM controller 1 unit 2
655			  3 = /dev/sbpcd7	Panasonic CD-ROM controller 1 unit 3
656	
657	 27 char	QIC-117 tape
658			  0 = /dev/qft0		Unit 0, rewind-on-close
659			  1 = /dev/qft1		Unit 1, rewind-on-close
660			  2 = /dev/qft2		Unit 2, rewind-on-close
661			  3 = /dev/qft3		Unit 3, rewind-on-close
662			  4 = /dev/nqft0	Unit 0, no rewind-on-close
663			  5 = /dev/nqft1	Unit 1, no rewind-on-close
664			  6 = /dev/nqft2	Unit 2, no rewind-on-close
665			  7 = /dev/nqft3	Unit 3, no rewind-on-close
666			 16 = /dev/zqft0	Unit 0, rewind-on-close, compression
667			 17 = /dev/zqft1	Unit 1, rewind-on-close, compression
668			 18 = /dev/zqft2	Unit 2, rewind-on-close, compression
669			 19 = /dev/zqft3	Unit 3, rewind-on-close, compression
670			 20 = /dev/nzqft0	Unit 0, no rewind-on-close, compression
671			 21 = /dev/nzqft1	Unit 1, no rewind-on-close, compression
672			 22 = /dev/nzqft2	Unit 2, no rewind-on-close, compression
673			 23 = /dev/nzqft3	Unit 3, no rewind-on-close, compression
674			 32 = /dev/rawqft0	Unit 0, rewind-on-close, no file marks
675			 33 = /dev/rawqft1	Unit 1, rewind-on-close, no file marks
676			 34 = /dev/rawqft2	Unit 2, rewind-on-close, no file marks
677			 35 = /dev/rawqft3	Unit 3, rewind-on-close, no file marks
678			 36 = /dev/nrawqft0	Unit 0, no rewind-on-close, no file marks
679			 37 = /dev/nrawqft1	Unit 1, no rewind-on-close, no file marks
680			 38 = /dev/nrawqft2	Unit 2, no rewind-on-close, no file marks
681			 39 = /dev/nrawqft3	Unit 3, no rewind-on-close, no file marks
682	
683	 27 block	Third Matsushita (Panasonic/SoundBlaster) CD-ROM
684			  0 = /dev/sbpcd8	Panasonic CD-ROM controller 2 unit 0
685			  1 = /dev/sbpcd9	Panasonic CD-ROM controller 2 unit 1
686			  2 = /dev/sbpcd10	Panasonic CD-ROM controller 2 unit 2
687			  3 = /dev/sbpcd11	Panasonic CD-ROM controller 2 unit 3
688	
689	 28 char	Stallion serial card - card programming
690			  0 = /dev/staliomem0	First Stallion card I/O memory
691			  1 = /dev/staliomem1	Second Stallion card I/O memory
692			  2 = /dev/staliomem2	Third Stallion card I/O memory
693			  3 = /dev/staliomem3	Fourth Stallion card I/O memory
694	
695	 28 char	Atari SLM ACSI laser printer (68k/Atari)
696			  0 = /dev/slm0		First SLM laser printer
697			  1 = /dev/slm1		Second SLM laser printer
698			    ...
699	 28 block	Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
700			  0 = /dev/sbpcd12	Panasonic CD-ROM controller 3 unit 0
701			  1 = /dev/sbpcd13	Panasonic CD-ROM controller 3 unit 1
702			  2 = /dev/sbpcd14	Panasonic CD-ROM controller 3 unit 2
703			  3 = /dev/sbpcd15	Panasonic CD-ROM controller 3 unit 3
704	
705	 28 block	ACSI disk (68k/Atari)
706			  0 = /dev/ada		First ACSI disk whole disk
707			 16 = /dev/adb		Second ACSI disk whole disk
708			 32 = /dev/adc		Third ACSI disk whole disk
709			    ...
710			240 = /dev/adp		16th ACSI disk whole disk
711	
712			Partitions are handled in the same way as for IDE
713			disks (see major number 3) except that the limit on
714			partitions is 15, like SCSI.
715	
716	 29 char	Universal frame buffer
717			  0 = /dev/fb0		First frame buffer
718			  1 = /dev/fb1		Second frame buffer
719			    ...
720			 31 = /dev/fb31		32nd frame buffer
721	
722	 29 block	Aztech/Orchid/Okano/Wearnes CD-ROM
723			  0 = /dev/aztcd	Aztech CD-ROM
724	
725	 30 char	iBCS-2 compatibility devices
726			  0 = /dev/socksys	Socket access
727			  1 = /dev/spx		SVR3 local X interface
728			 32 = /dev/inet/ip	Network access
729			 33 = /dev/inet/icmp
730			 34 = /dev/inet/ggp
731			 35 = /dev/inet/ipip
732			 36 = /dev/inet/tcp
733			 37 = /dev/inet/egp
734			 38 = /dev/inet/pup
735			 39 = /dev/inet/udp
736			 40 = /dev/inet/idp
737			 41 = /dev/inet/rawip
738	
739			Additionally, iBCS-2 requires the following links:
740	
741			/dev/ip -> /dev/inet/ip
742			/dev/icmp -> /dev/inet/icmp
743			/dev/ggp -> /dev/inet/ggp
744			/dev/ipip -> /dev/inet/ipip
745			/dev/tcp -> /dev/inet/tcp
746			/dev/egp -> /dev/inet/egp
747			/dev/pup -> /dev/inet/pup
748			/dev/udp -> /dev/inet/udp
749			/dev/idp -> /dev/inet/idp
750			/dev/rawip -> /dev/inet/rawip
751			/dev/inet/arp -> /dev/inet/udp
752			/dev/inet/rip -> /dev/inet/udp
753			/dev/nfsd -> /dev/socksys
754			/dev/X0R -> /dev/null (? apparently not required ?)
755	
756	 30 block	Philips LMS CM-205 CD-ROM
757			  0 = /dev/cm205cd	Philips LMS CM-205 CD-ROM
758	
759			/dev/lmscd is an older name for this device.  This
760			driver does not work with the CM-205MS CD-ROM.
761	
762	 31 char	MPU-401 MIDI
763			  0 = /dev/mpu401data	MPU-401 data port
764			  1 = /dev/mpu401stat	MPU-401 status port
765	
766	 31 block	ROM/flash memory card
767			  0 = /dev/rom0		First ROM card (rw)
768			      ...
769			  7 = /dev/rom7		Eighth ROM card (rw)
770			  8 = /dev/rrom0	First ROM card (ro)
771			    ...
772			 15 = /dev/rrom7	Eighth ROM card (ro)
773			 16 = /dev/flash0	First flash memory card (rw)
774			    ...
775			 23 = /dev/flash7	Eighth flash memory card (rw)
776			 24 = /dev/rflash0	First flash memory card (ro)
777			    ...
778			 31 = /dev/rflash7	Eighth flash memory card (ro)
779	
780			The read-write (rw) devices support back-caching
781			written data in RAM, as well as writing to flash RAM
782			devices.  The read-only devices (ro) support reading
783			only.
784	
785	 32 char	Specialix serial card
786			  0 = /dev/ttyX0	First Specialix port
787			  1 = /dev/ttyX1	Second Specialix port
788			    ...
789	 32 block	Philips LMS CM-206 CD-ROM
790			  0 = /dev/cm206cd	Philips LMS CM-206 CD-ROM
791	
792	 33 char	Specialix serial card - alternate devices
793			  0 = /dev/cux0		Callout device for ttyX0
794			  1 = /dev/cux1		Callout device for ttyX1
795			    ...
796	 33 block	Third IDE hard disk/CD-ROM interface
797			  0 = /dev/hde		Master: whole disk (or CD-ROM)
798			 64 = /dev/hdf		Slave: whole disk (or CD-ROM)
799	
800			Partitions are handled the same way as for the first
801			interface (see major number 3).
802	
803	 34 char	Z8530 HDLC driver
804			  0 = /dev/scc0		First Z8530, first port
805			  1 = /dev/scc1		First Z8530, second port
806			  2 = /dev/scc2		Second Z8530, first port
807			  3 = /dev/scc3		Second Z8530, second port
808			    ...
809	
810			In a previous version these devices were named
811			/dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so
812			on.
813	
814	 34 block	Fourth IDE hard disk/CD-ROM interface
815			  0 = /dev/hdg		Master: whole disk (or CD-ROM)
816			 64 = /dev/hdh		Slave: whole disk (or CD-ROM)
817	
818			Partitions are handled the same way as for the first
819			interface (see major number 3).
820	
821	 35 char	tclmidi MIDI driver
822			  0 = /dev/midi0	First MIDI port, kernel timed
823			  1 = /dev/midi1	Second MIDI port, kernel timed
824			  2 = /dev/midi2	Third MIDI port, kernel timed
825			  3 = /dev/midi3	Fourth MIDI port, kernel timed
826			 64 = /dev/rmidi0	First MIDI port, untimed
827			 65 = /dev/rmidi1	Second MIDI port, untimed
828			 66 = /dev/rmidi2	Third MIDI port, untimed
829			 67 = /dev/rmidi3	Fourth MIDI port, untimed
830			128 = /dev/smpte0	First MIDI port, SMPTE timed
831			129 = /dev/smpte1	Second MIDI port, SMPTE timed
832			130 = /dev/smpte2	Third MIDI port, SMPTE timed
833			131 = /dev/smpte3	Fourth MIDI port, SMPTE timed
834	
835	 35 block	Slow memory ramdisk
836			  0 = /dev/slram	Slow memory ramdisk
837	
838	 36 char	Netlink support
839			  0 = /dev/route	Routing, device updates, kernel to user
840			  1 = /dev/skip		enSKIP security cache control
841			  3 = /dev/fwmonitor	Firewall packet copies
842			 16 = /dev/tap0		First Ethertap device
843			    ...
844			 31 = /dev/tap15	16th Ethertap device
845	
846	 36 block	OBSOLETE (was MCA ESDI hard disk)
847	
848	 37 char	IDE tape
849			  0 = /dev/ht0		First IDE tape
850			  1 = /dev/ht1		Second IDE tape
851			    ...
852			128 = /dev/nht0		First IDE tape, no rewind-on-close
853			129 = /dev/nht1		Second IDE tape, no rewind-on-close
854			    ...
855	
856			Currently, only one IDE tape drive is supported.
857	
858	 37 block	Zorro II ramdisk
859			  0 = /dev/z2ram	Zorro II ramdisk
860	
861	 38 char	Myricom PCI Myrinet board
862			  0 = /dev/mlanai0	First Myrinet board
863			  1 = /dev/mlanai1	Second Myrinet board
864			    ...
865	
866			This device is used for status query, board control
867			and "user level packet I/O."  This board is also
868			accessible as a standard networking "eth" device.
869	
870	 38 block	OBSOLETE (was Linux/AP+)
871	
872	 39 char	ML-16P experimental I/O board
873			  0 = /dev/ml16pa-a0	First card, first analog channel
874			  1 = /dev/ml16pa-a1	First card, second analog channel
875			    ...
876			 15 = /dev/ml16pa-a15	First card, 16th analog channel
877			 16 = /dev/ml16pa-d	First card, digital lines
878			 17 = /dev/ml16pa-c0	First card, first counter/timer
879			 18 = /dev/ml16pa-c1	First card, second counter/timer
880			 19 = /dev/ml16pa-c2	First card, third counter/timer
881			 32 = /dev/ml16pb-a0	Second card, first analog channel
882			 33 = /dev/ml16pb-a1	Second card, second analog channel
883			    ...
884			 47 = /dev/ml16pb-a15	Second card, 16th analog channel
885			 48 = /dev/ml16pb-d	Second card, digital lines
886			 49 = /dev/ml16pb-c0	Second card, first counter/timer
887			 50 = /dev/ml16pb-c1	Second card, second counter/timer
888			 51 = /dev/ml16pb-c2	Second card, third counter/timer
889			      ...
890	 39 block
891	
892	 40 char
893	
894	 40 block
895	
896	 41 char	Yet Another Micro Monitor
897			  0 = /dev/yamm		Yet Another Micro Monitor
898	
899	 41 block
900	
901	 42 char	Demo/sample use
902	
903	 42 block	Demo/sample use
904	
905			This number is intended for use in sample code, as
906			well as a general "example" device number.  It
907			should never be used for a device driver that is being
908			distributed; either obtain an official number or use
909			the local/experimental range.  The sudden addition or
910			removal of a driver with this number should not cause
911			ill effects to the system (bugs excepted.)
912	
913			IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A
914			DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT.
915	
916	 43 char	isdn4linux virtual modem
917			  0 = /dev/ttyI0	First virtual modem
918			    ...
919			 63 = /dev/ttyI63	64th virtual modem
920	
921	 43 block	Network block devices
922			  0 = /dev/nb0		First network block device
923			  1 = /dev/nb1		Second network block device
924			    ...
925	
926			Network Block Device is somehow similar to loopback
927			devices: If you read from it, it sends packet across
928			network asking server for data. If you write to it, it
929			sends packet telling server to write. It could be used
930			to mounting filesystems over the net, swapping over
931			the net, implementing block device in userland etc.
932	
933	 44 char	isdn4linux virtual modem - alternate devices
934			  0 = /dev/cui0		Callout device for ttyI0
935			    ...
936			 63 = /dev/cui63	Callout device for ttyI63
937	
938	 44 block	Flash Translation Layer (FTL) filesystems
939			  0 = /dev/ftla		FTL on first Memory Technology Device
940			 16 = /dev/ftlb		FTL on second Memory Technology Device
941			 32 = /dev/ftlc		FTL on third Memory Technology Device
942			    ...
943			240 = /dev/ftlp		FTL on 16th Memory Technology Device
944	
945			Partitions are handled in the same way as for IDE
946			disks (see major number 3) except that the partition
947			limit is 15 rather than 63 per disk (same as SCSI.)
948	
949	 45 char	isdn4linux ISDN BRI driver
950			  0 = /dev/isdn0	First virtual B channel raw data
951			    ...
952			 63 = /dev/isdn63	64th virtual B channel raw data
953			 64 = /dev/isdnctrl0	First channel control/debug
954			    ...
955			127 = /dev/isdnctrl63	64th channel control/debug
956	
957			128 = /dev/ippp0	First SyncPPP device
958			    ...
959			191 = /dev/ippp63	64th SyncPPP device
960	
961			255 = /dev/isdninfo	ISDN monitor interface
962	
963	 45 block	Parallel port IDE disk devices
964			  0 = /dev/pda		First parallel port IDE disk
965			 16 = /dev/pdb		Second parallel port IDE disk
966			 32 = /dev/pdc		Third parallel port IDE disk
967			 48 = /dev/pdd		Fourth parallel port IDE disk
968	
969			Partitions are handled in the same way as for IDE
970			disks (see major number 3) except that the partition
971			limit is 15 rather than 63 per disk.
972	
973	 46 char	Comtrol Rocketport serial card
974			  0 = /dev/ttyR0	First Rocketport port
975			  1 = /dev/ttyR1	Second Rocketport port
976			    ...
977	 46 block	Parallel port ATAPI CD-ROM devices
978			  0 = /dev/pcd0		First parallel port ATAPI CD-ROM
979			  1 = /dev/pcd1		Second parallel port ATAPI CD-ROM
980			  2 = /dev/pcd2		Third parallel port ATAPI CD-ROM
981			  3 = /dev/pcd3		Fourth parallel port ATAPI CD-ROM
982	
983	 47 char	Comtrol Rocketport serial card - alternate devices
984			  0 = /dev/cur0		Callout device for ttyR0
985			  1 = /dev/cur1		Callout device for ttyR1
986			    ...
987	 47 block	Parallel port ATAPI disk devices
988			  0 = /dev/pf0		First parallel port ATAPI disk
989			  1 = /dev/pf1		Second parallel port ATAPI disk
990			  2 = /dev/pf2		Third parallel port ATAPI disk
991			  3 = /dev/pf3		Fourth parallel port ATAPI disk
992	
993			This driver is intended for floppy disks and similar
994			devices and hence does not support partitioning.
995	
996	 48 char	SDL RISCom serial card
997			  0 = /dev/ttyL0	First RISCom port
998			  1 = /dev/ttyL1	Second RISCom port
999			    ...
1000	 48 block	Mylex DAC960 PCI RAID controller; first controller
1001			  0 = /dev/rd/c0d0	First disk, whole disk
1002			  8 = /dev/rd/c0d1	Second disk, whole disk
1003			    ...
1004			248 = /dev/rd/c0d31	32nd disk, whole disk
1005	
1006			For partitions add:
1007			  0 = /dev/rd/c?d?	Whole disk
1008			  1 = /dev/rd/c?d?p1	First partition
1009			    ...
1010			  7 = /dev/rd/c?d?p7	Seventh partition
1011	
1012	 49 char	SDL RISCom serial card - alternate devices
1013			  0 = /dev/cul0		Callout device for ttyL0
1014			  1 = /dev/cul1		Callout device for ttyL1
1015			    ...
1016	 49 block	Mylex DAC960 PCI RAID controller; second controller
1017			  0 = /dev/rd/c1d0	First disk, whole disk
1018			  8 = /dev/rd/c1d1	Second disk, whole disk
1019			    ...
1020			248 = /dev/rd/c1d31	32nd disk, whole disk
1021	
1022			Partitions are handled as for major 48.
1023	
1024	 50 char	Reserved for GLINT
1025	
1026	 50 block	Mylex DAC960 PCI RAID controller; third controller
1027			  0 = /dev/rd/c2d0	First disk, whole disk
1028			  8 = /dev/rd/c2d1	Second disk, whole disk
1029			    ...
1030			248 = /dev/rd/c2d31	32nd disk, whole disk
1031	
1032	 51 char	Baycom radio modem OR Radio Tech BIM-XXX-RS232 radio modem
1033			  0 = /dev/bc0		First Baycom radio modem
1034			  1 = /dev/bc1		Second Baycom radio modem
1035			    ...
1036	 51 block	Mylex DAC960 PCI RAID controller; fourth controller
1037			  0 = /dev/rd/c3d0	First disk, whole disk
1038			  8 = /dev/rd/c3d1	Second disk, whole disk
1039			    ...
1040			248 = /dev/rd/c3d31	32nd disk, whole disk
1041	
1042			Partitions are handled as for major 48.
1043	
1044	 52 char	Spellcaster DataComm/BRI ISDN card
1045			  0 = /dev/dcbri0	First DataComm card
1046			  1 = /dev/dcbri1	Second DataComm card
1047			  2 = /dev/dcbri2	Third DataComm card
1048			  3 = /dev/dcbri3	Fourth DataComm card
1049	
1050	 52 block	Mylex DAC960 PCI RAID controller; fifth controller
1051			  0 = /dev/rd/c4d0	First disk, whole disk
1052			  8 = /dev/rd/c4d1	Second disk, whole disk
1053			    ...
1054			248 = /dev/rd/c4d31	32nd disk, whole disk
1055	
1056			Partitions are handled as for major 48.
1057	
1058	 53 char	BDM interface for remote debugging MC683xx microcontrollers
1059			  0 = /dev/pd_bdm0	PD BDM interface on lp0
1060			  1 = /dev/pd_bdm1	PD BDM interface on lp1
1061			  2 = /dev/pd_bdm2	PD BDM interface on lp2
1062			  4 = /dev/icd_bdm0	ICD BDM interface on lp0
1063			  5 = /dev/icd_bdm1	ICD BDM interface on lp1
1064			  6 = /dev/icd_bdm2	ICD BDM interface on lp2
1065	
1066			This device is used for the interfacing to the MC683xx
1067			microcontrollers via Background Debug Mode by use of a
1068			Parallel Port interface. PD is the Motorola Public
1069			Domain Interface and ICD is the commercial interface
1070			by P&E.
1071	
1072	 53 block	Mylex DAC960 PCI RAID controller; sixth controller
1073			  0 = /dev/rd/c5d0	First disk, whole disk
1074			  8 = /dev/rd/c5d1	Second disk, whole disk
1075			    ...
1076			248 = /dev/rd/c5d31	32nd disk, whole disk
1077	
1078			Partitions are handled as for major 48.
1079	
1080	 54 char	Electrocardiognosis Holter serial card
1081			  0 = /dev/holter0	First Holter port
1082			  1 = /dev/holter1	Second Holter port
1083			  2 = /dev/holter2	Third Holter port
1084	
1085			A custom serial card used by Electrocardiognosis SRL
1086			<mseritan@ottonel.pub.ro> to transfer data from Holter
1087			24-hour heart monitoring equipment.
1088	
1089	 54 block	Mylex DAC960 PCI RAID controller; seventh controller
1090			  0 = /dev/rd/c6d0	First disk, whole disk
1091			  8 = /dev/rd/c6d1	Second disk, whole disk
1092			    ...
1093			248 = /dev/rd/c6d31	32nd disk, whole disk
1094	
1095			Partitions are handled as for major 48.
1096	
1097	 55 char	DSP56001 digital signal processor
1098			  0 = /dev/dsp56k	First DSP56001
1099	
1100	 55 block	Mylex DAC960 PCI RAID controller; eighth controller
1101			  0 = /dev/rd/c7d0	First disk, whole disk
1102			  8 = /dev/rd/c7d1	Second disk, whole disk
1103			    ...
1104			248 = /dev/rd/c7d31	32nd disk, whole disk
1105	
1106			Partitions are handled as for major 48.
1107	
1108	 56 char	Apple Desktop Bus
1109			  0 = /dev/adb		ADB bus control
1110	
1111			Additional devices will be added to this number, all
1112			starting with /dev/adb.
1113	
1114	 56 block	Fifth IDE hard disk/CD-ROM interface
1115			  0 = /dev/hdi		Master: whole disk (or CD-ROM)
1116			 64 = /dev/hdj		Slave: whole disk (or CD-ROM)
1117	
1118			Partitions are handled the same way as for the first
1119			interface (see major number 3).
1120	
1121	 57 char	Hayes ESP serial card
1122			  0 = /dev/ttyP0	First ESP port
1123			  1 = /dev/ttyP1	Second ESP port
1124			    ...
1125	
1126	 57 block	Sixth IDE hard disk/CD-ROM interface
1127			  0 = /dev/hdk		Master: whole disk (or CD-ROM)
1128			 64 = /dev/hdl		Slave: whole disk (or CD-ROM)
1129	
1130			Partitions are handled the same way as for the first
1131			interface (see major number 3).
1132	
1133	 58 char	Hayes ESP serial card - alternate devices
1134			  0 = /dev/cup0		Callout device for ttyP0
1135			  1 = /dev/cup1		Callout device for ttyP1
1136			    ...
1137	
1138	 58 block	Reserved for logical volume manager
1139	
1140	 59 char	sf firewall package
1141			  0 = /dev/firewall	Communication with sf kernel module
1142	
1143	 59 block	Generic PDA filesystem device
1144			  0 = /dev/pda0		First PDA device
1145			  1 = /dev/pda1		Second PDA device
1146			    ...
1147	
1148			The pda devices are used to mount filesystems on
1149			remote pda's (basically slow handheld machines with
1150			proprietary OS's and limited memory and storage
1151			running small fs translation drivers) through serial /
1152			IRDA / parallel links.
1153	
1154			NAMING CONFLICT -- PROPOSED REVISED NAME /dev/rpda0 etc
1155	
1156	 60-63 char	LOCAL/EXPERIMENTAL USE
1157	
1158	 60-63 block	LOCAL/EXPERIMENTAL USE
1159			Allocated for local/experimental use.  For devices not
1160			assigned official numbers, these ranges should be
1161			used in order to avoid conflicting with future assignments.
1162	
1163	 64 char	ENskip kernel encryption package
1164			  0 = /dev/enskip	Communication with ENskip kernel module
1165	
1166	 64 block	Scramdisk/DriveCrypt encrypted devices
1167			  0 = /dev/scramdisk/master    Master node for ioctls
1168			  1 = /dev/scramdisk/1         First encrypted device
1169			  2 = /dev/scramdisk/2         Second encrypted device
1170			  ...
1171			255 = /dev/scramdisk/255       255th encrypted device
1172	
1173			The filename of the encrypted container and the passwords
1174			are sent via ioctls (using the sdmount tool) to the master
1175			node which then activates them via one of the
1176			/dev/scramdisk/x nodes for loop mounting (all handled
1177			through the sdmount tool).
1178	
1179			Requested by: andy@scramdisklinux.org
1180	
1181	 65 char	Sundance "plink" Transputer boards (obsolete, unused)
1182			  0 = /dev/plink0	First plink device
1183			  1 = /dev/plink1	Second plink device
1184			  2 = /dev/plink2	Third plink device
1185			  3 = /dev/plink3	Fourth plink device
1186			 64 = /dev/rplink0	First plink device, raw
1187			 65 = /dev/rplink1	Second plink device, raw
1188			 66 = /dev/rplink2	Third plink device, raw
1189			 67 = /dev/rplink3	Fourth plink device, raw
1190			128 = /dev/plink0d	First plink device, debug
1191			129 = /dev/plink1d	Second plink device, debug
1192			130 = /dev/plink2d	Third plink device, debug
1193			131 = /dev/plink3d	Fourth plink device, debug
1194			192 = /dev/rplink0d	First plink device, raw, debug
1195			193 = /dev/rplink1d	Second plink device, raw, debug
1196			194 = /dev/rplink2d	Third plink device, raw, debug
1197			195 = /dev/rplink3d	Fourth plink device, raw, debug
1198	
1199			This is a commercial driver; contact James Howes
1200			<jth@prosig.demon.co.uk> for information.
1201	
1202	 65 block	SCSI disk devices (16-31)
1203			  0 = /dev/sdq		17th SCSI disk whole disk
1204			 16 = /dev/sdr		18th SCSI disk whole disk
1205			 32 = /dev/sds		19th SCSI disk whole disk
1206			    ...
1207			240 = /dev/sdaf		32nd SCSI disk whole disk
1208	
1209			Partitions are handled in the same way as for IDE
1210			disks (see major number 3) except that the limit on
1211			partitions is 15.
1212	
1213	 66 char	YARC PowerPC PCI coprocessor card
1214			  0 = /dev/yppcpci0	First YARC card
1215			  1 = /dev/yppcpci1	Second YARC card
1216			    ...
1217	
1218	 66 block	SCSI disk devices (32-47)
1219			  0 = /dev/sdag		33th SCSI disk whole disk
1220			 16 = /dev/sdah		34th SCSI disk whole disk
1221			 32 = /dev/sdai		35th SCSI disk whole disk
1222			    ...
1223			240 = /dev/sdav		48nd SCSI disk whole disk
1224	
1225			Partitions are handled in the same way as for IDE
1226			disks (see major number 3) except that the limit on
1227			partitions is 15.
1228	
1229	 67 char	Coda network file system
1230			  0 = /dev/cfs0		Coda cache manager
1231	
1232			See http://www.coda.cs.cmu.edu for information about Coda.
1233	
1234	 67 block	SCSI disk devices (48-63)
1235			  0 = /dev/sdaw		49th SCSI disk whole disk
1236			 16 = /dev/sdax		50th SCSI disk whole disk
1237			 32 = /dev/sday		51st SCSI disk whole disk
1238			    ...
1239			240 = /dev/sdbl		64th SCSI disk whole disk
1240	
1241			Partitions are handled in the same way as for IDE
1242			disks (see major number 3) except that the limit on
1243			partitions is 15.
1244	
1245	 68 char	CAPI 2.0 interface
1246			  0 = /dev/capi20	Control device
1247			  1 = /dev/capi20.00	First CAPI 2.0 application
1248			  2 = /dev/capi20.01	Second CAPI 2.0 application
1249			    ...
1250			 20 = /dev/capi20.19	19th CAPI 2.0 application
1251	
1252			ISDN CAPI 2.0 driver for use with CAPI 2.0
1253			applications; currently supports the AVM B1 card.
1254	
1255	 68 block	SCSI disk devices (64-79)
1256			  0 = /dev/sdbm		65th SCSI disk whole disk
1257			 16 = /dev/sdbn		66th SCSI disk whole disk
1258			 32 = /dev/sdbo		67th SCSI disk whole disk
1259			    ...
1260			240 = /dev/sdcb		80th SCSI disk whole disk
1261	
1262			Partitions are handled in the same way as for IDE
1263			disks (see major number 3) except that the limit on
1264			partitions is 15.
1265	
1266	 69 char	MA16 numeric accelerator card
1267			  0 = /dev/ma16		Board memory access
1268	
1269	 69 block	SCSI disk devices (80-95)
1270			  0 = /dev/sdcc		81st SCSI disk whole disk
1271			 16 = /dev/sdcd		82nd SCSI disk whole disk
1272			 32 = /dev/sdce		83th SCSI disk whole disk
1273			    ...
1274			240 = /dev/sdcr		96th SCSI disk whole disk
1275	
1276			Partitions are handled in the same way as for IDE
1277			disks (see major number 3) except that the limit on
1278			partitions is 15.
1279	
1280	 70 char	SpellCaster Protocol Services Interface
1281			  0 = /dev/apscfg	Configuration interface
1282			  1 = /dev/apsauth	Authentication interface
1283			  2 = /dev/apslog	Logging interface
1284			  3 = /dev/apsdbg	Debugging interface
1285			 64 = /dev/apsisdn	ISDN command interface
1286			 65 = /dev/apsasync	Async command interface
1287			128 = /dev/apsmon	Monitor interface
1288	
1289	 70 block	SCSI disk devices (96-111)
1290			  0 = /dev/sdcs		97th SCSI disk whole disk
1291			 16 = /dev/sdct		98th SCSI disk whole disk
1292			 32 = /dev/sdcu		99th SCSI disk whole disk
1293			    ...
1294			240 = /dev/sddh		112nd SCSI disk whole disk
1295	
1296			Partitions are handled in the same way as for IDE
1297			disks (see major number 3) except that the limit on
1298			partitions is 15.
1299	
1300	 71 char	Computone IntelliPort II serial card
1301			  0 = /dev/ttyF0	IntelliPort II board 0, port 0
1302			  1 = /dev/ttyF1	IntelliPort II board 0, port 1
1303			    ...
1304			 63 = /dev/ttyF63	IntelliPort II board 0, port 63
1305			 64 = /dev/ttyF64	IntelliPort II board 1, port 0
1306			 65 = /dev/ttyF65	IntelliPort II board 1, port 1
1307			    ...
1308			127 = /dev/ttyF127	IntelliPort II board 1, port 63
1309			128 = /dev/ttyF128	IntelliPort II board 2, port 0
1310			129 = /dev/ttyF129	IntelliPort II board 2, port 1
1311			    ...
1312			191 = /dev/ttyF191	IntelliPort II board 2, port 63
1313			192 = /dev/ttyF192	IntelliPort II board 3, port 0
1314			193 = /dev/ttyF193	IntelliPort II board 3, port 1
1315			    ...
1316			255 = /dev/ttyF255	IntelliPort II board 3, port 63
1317	
1318	 71 block	SCSI disk devices (112-127)
1319			  0 = /dev/sddi		113th SCSI disk whole disk
1320			 16 = /dev/sddj		114th SCSI disk whole disk
1321			 32 = /dev/sddk		115th SCSI disk whole disk
1322			    ...
1323			240 = /dev/sddx		128th SCSI disk whole disk
1324	
1325			Partitions are handled in the same way as for IDE
1326			disks (see major number 3) except that the limit on
1327			partitions is 15.
1328	
1329	 72 char	Computone IntelliPort II serial card - alternate devices
1330			  0 = /dev/cuf0		Callout device for ttyF0
1331			  1 = /dev/cuf1		Callout device for ttyF1
1332			    ...
1333			 63 = /dev/cuf63	Callout device for ttyF63
1334			 64 = /dev/cuf64	Callout device for ttyF64
1335			 65 = /dev/cuf65	Callout device for ttyF65
1336			    ...
1337			127 = /dev/cuf127	Callout device for ttyF127
1338			128 = /dev/cuf128	Callout device for ttyF128
1339			129 = /dev/cuf129	Callout device for ttyF129
1340			    ...
1341			191 = /dev/cuf191	Callout device for ttyF191
1342			192 = /dev/cuf192	Callout device for ttyF192
1343			193 = /dev/cuf193	Callout device for ttyF193
1344			    ...
1345			255 = /dev/cuf255	Callout device for ttyF255
1346	
1347	 72 block	Compaq Intelligent Drive Array, first controller
1348			  0 = /dev/ida/c0d0	First logical drive whole disk
1349			 16 = /dev/ida/c0d1	Second logical drive whole disk
1350			    ...
1351			240 = /dev/ida/c0d15	16th logical drive whole disk
1352	
1353			Partitions are handled the same way as for Mylex
1354			DAC960 (see major number 48) except that the limit on
1355			partitions is 15.
1356	
1357	 73 char	Computone IntelliPort II serial card - control devices
1358			  0 = /dev/ip2ipl0	Loadware device for board 0
1359			  1 = /dev/ip2stat0	Status device for board 0
1360			  4 = /dev/ip2ipl1	Loadware device for board 1
1361			  5 = /dev/ip2stat1	Status device for board 1
1362			  8 = /dev/ip2ipl2	Loadware device for board 2
1363			  9 = /dev/ip2stat2	Status device for board 2
1364			 12 = /dev/ip2ipl3	Loadware device for board 3
1365			 13 = /dev/ip2stat3	Status device for board 3
1366	
1367	 73 block	Compaq Intelligent Drive Array, second controller
1368			  0 = /dev/ida/c1d0	First logical drive whole disk
1369			 16 = /dev/ida/c1d1	Second logical drive whole disk
1370			    ...
1371			240 = /dev/ida/c1d15	16th logical drive whole disk
1372	
1373			Partitions are handled the same way as for Mylex
1374			DAC960 (see major number 48) except that the limit on
1375			partitions is 15.
1376	
1377	 74 char	SCI bridge
1378			  0 = /dev/SCI/0	SCI device 0
1379			  1 = /dev/SCI/1	SCI device 1
1380			    ...
1381	
1382			Currently for Dolphin Interconnect Solutions' PCI-SCI
1383			bridge.
1384	
1385	 74 block	Compaq Intelligent Drive Array, third controller
1386			  0 = /dev/ida/c2d0	First logical drive whole disk
1387			 16 = /dev/ida/c2d1	Second logical drive whole disk
1388			    ...
1389			240 = /dev/ida/c2d15	16th logical drive whole disk
1390	
1391			Partitions are handled the same way as for Mylex
1392			DAC960 (see major number 48) except that the limit on
1393			partitions is 15.
1394	
1395	 75 char	Specialix IO8+ serial card
1396			  0 = /dev/ttyW0	First IO8+ port, first card
1397			  1 = /dev/ttyW1	Second IO8+ port, first card
1398			    ...
1399			  8 = /dev/ttyW8	First IO8+ port, second card
1400			    ...
1401	
1402	 75 block	Compaq Intelligent Drive Array, fourth controller
1403			  0 = /dev/ida/c3d0	First logical drive whole disk
1404			 16 = /dev/ida/c3d1	Second logical drive whole disk
1405			    ...
1406			240 = /dev/ida/c3d15	16th logical drive whole disk
1407	
1408			Partitions are handled the same way as for Mylex
1409			DAC960 (see major number 48) except that the limit on
1410			partitions is 15.
1411	
1412	 76 char	Specialix IO8+ serial card - alternate devices
1413			  0 = /dev/cuw0		Callout device for ttyW0
1414			  1 = /dev/cuw1		Callout device for ttyW1
1415			    ...
1416			  8 = /dev/cuw8		Callout device for ttyW8
1417			    ...
1418	
1419	 76 block	Compaq Intelligent Drive Array, fifth controller
1420			  0 = /dev/ida/c4d0	First logical drive whole disk
1421			 16 = /dev/ida/c4d1	Second logical drive whole disk
1422			    ...
1423			240 = /dev/ida/c4d15	16th logical drive whole disk
1424	
1425			Partitions are handled the same way as for Mylex
1426			DAC960 (see major number 48) except that the limit on
1427			partitions is 15.
1428	
1429	
1430	 77 char	ComScire Quantum Noise Generator
1431			  0 = /dev/qng		ComScire Quantum Noise Generator
1432	
1433	 77 block	Compaq Intelligent Drive Array, sixth controller
1434			  0 = /dev/ida/c5d0	First logical drive whole disk
1435			 16 = /dev/ida/c5d1	Second logical drive whole disk
1436			    ...
1437			240 = /dev/ida/c5d15	16th logical drive whole disk
1438	
1439			Partitions are handled the same way as for Mylex
1440			DAC960 (see major number 48) except that the limit on
1441			partitions is 15.
1442	
1443	 78 char	PAM Software's multimodem boards
1444			  0 = /dev/ttyM0	First PAM modem
1445			  1 = /dev/ttyM1	Second PAM modem
1446			    ...
1447	
1448	 78 block	Compaq Intelligent Drive Array, seventh controller
1449			  0 = /dev/ida/c6d0	First logical drive whole disk
1450			 16 = /dev/ida/c6d1	Second logical drive whole disk
1451			    ...
1452			240 = /dev/ida/c6d15	16th logical drive whole disk
1453	
1454			Partitions are handled the same way as for Mylex
1455			DAC960 (see major number 48) except that the limit on
1456			partitions is 15.
1457	
1458	 79 char	PAM Software's multimodem boards - alternate devices
1459			  0 = /dev/cum0		Callout device for ttyM0
1460			  1 = /dev/cum1		Callout device for ttyM1
1461			    ...
1462	
1463	 79 block	Compaq Intelligent Drive Array, eighth controller
1464			  0 = /dev/ida/c7d0	First logical drive whole disk
1465			 16 = /dev/ida/c7d1	Second logical drive whole disk
1466			    ...
1467			240 = /dev/ida/c715	16th logical drive whole disk
1468	
1469			Partitions are handled the same way as for Mylex
1470			DAC960 (see major number 48) except that the limit on
1471			partitions is 15.
1472	
1473	 80 char	Photometrics AT200 CCD camera
1474			  0 = /dev/at200	Photometrics AT200 CCD camera
1475	
1476	 80 block	I2O hard disk
1477			  0 = /dev/i2o/hda	First I2O hard disk, whole disk
1478			 16 = /dev/i2o/hdb	Second I2O hard disk, whole disk
1479			    ...
1480			240 = /dev/i2o/hdp	16th I2O hard disk, whole disk
1481	
1482			Partitions are handled in the same way as for IDE
1483			disks (see major number 3) except that the limit on
1484			partitions is 15.
1485	
1486	 81 char	video4linux
1487			  0 = /dev/video0	Video capture/overlay device
1488			    ...
1489			 63 = /dev/video63	Video capture/overlay device
1490			 64 = /dev/radio0	Radio device
1491			    ...
1492			127 = /dev/radio63	Radio device
1493			224 = /dev/vbi0		Vertical blank interrupt
1494			    ...
1495			255 = /dev/vbi31	Vertical blank interrupt
1496	
1497	 81 block	I2O hard disk
1498			  0 = /dev/i2o/hdq	17th I2O hard disk, whole disk
1499			 16 = /dev/i2o/hdr	18th I2O hard disk, whole disk
1500			    ...
1501			240 = /dev/i2o/hdaf	32nd I2O hard disk, whole disk
1502	
1503			Partitions are handled in the same way as for IDE
1504			disks (see major number 3) except that the limit on
1505			partitions is 15.
1506	
1507	 82 char	WiNRADiO communications receiver card
1508			  0 = /dev/winradio0	First WiNRADiO card
1509			  1 = /dev/winradio1	Second WiNRADiO card
1510			    ...
1511	
1512			The driver and documentation may be obtained from
1513			http://www.winradio.com/
1514	
1515	 82 block	I2O hard disk
1516			  0 = /dev/i2o/hdag	33rd I2O hard disk, whole disk
1517			 16 = /dev/i2o/hdah	34th I2O hard disk, whole disk
1518			    ...
1519			240 = /dev/i2o/hdav	48th I2O hard disk, whole disk
1520	
1521			Partitions are handled in the same way as for IDE
1522			disks (see major number 3) except that the limit on
1523			partitions is 15.
1524	
1525	 83 char	Matrox mga_vid video driver
1526	 		 0 = /dev/mga_vid0	1st video card
1527			 1 = /dev/mga_vid1	2nd video card
1528			 2 = /dev/mga_vid2	3rd video card
1529			  ...
1530		        15 = /dev/mga_vid15	16th video card
1531	
1532	 83 block	I2O hard disk
1533			  0 = /dev/i2o/hdaw	49th I2O hard disk, whole disk
1534			 16 = /dev/i2o/hdax	50th I2O hard disk, whole disk
1535			    ...
1536			240 = /dev/i2o/hdbl	64th I2O hard disk, whole disk
1537	
1538			Partitions are handled in the same way as for IDE
1539			disks (see major number 3) except that the limit on
1540			partitions is 15.
1541	
1542	 84 char	Ikon 1011[57] Versatec Greensheet Interface
1543			  0 = /dev/ihcp0	First Greensheet port
1544			  1 = /dev/ihcp1	Second Greensheet port
1545	
1546	 84 block	I2O hard disk
1547			  0 = /dev/i2o/hdbm	65th I2O hard disk, whole disk
1548			 16 = /dev/i2o/hdbn	66th I2O hard disk, whole disk
1549			    ...
1550			240 = /dev/i2o/hdcb	80th I2O hard disk, whole disk
1551	
1552			Partitions are handled in the same way as for IDE
1553			disks (see major number 3) except that the limit on
1554			partitions is 15.
1555	
1556	 85 char	Linux/SGI shared memory input queue
1557			  0 = /dev/shmiq	Master shared input queue
1558			  1 = /dev/qcntl0	First device pushed
1559			  2 = /dev/qcntl1	Second device pushed
1560			    ...
1561	
1562	 85 block	I2O hard disk
1563			  0 = /dev/i2o/hdcc	81st I2O hard disk, whole disk
1564			 16 = /dev/i2o/hdcd	82nd I2O hard disk, whole disk
1565			    ...
1566			240 = /dev/i2o/hdcr	96th I2O hard disk, whole disk
1567	
1568			Partitions are handled in the same way as for IDE
1569			disks (see major number 3) except that the limit on
1570			partitions is 15.
1571	
1572	 86 char	SCSI media changer
1573			  0 = /dev/sch0		First SCSI media changer
1574			  1 = /dev/sch1		Second SCSI media changer
1575			    ...
1576	
1577	 86 block	I2O hard disk
1578			  0 = /dev/i2o/hdcs	97th I2O hard disk, whole disk
1579			 16 = /dev/i2o/hdct	98th I2O hard disk, whole disk
1580			    ...
1581			240 = /dev/i2o/hddh	112th I2O hard disk, whole disk
1582	
1583			Partitions are handled in the same way as for IDE
1584			disks (see major number 3) except that the limit on
1585			partitions is 15.
1586	
1587	 87 char	Sony Control-A1 stereo control bus
1588			  0 = /dev/controla0	First device on chain
1589			  1 = /dev/controla1	Second device on chain
1590			    ...
1591	
1592	 87 block	I2O hard disk
1593			  0 = /dev/i2o/hddi	113rd I2O hard disk, whole disk
1594			 16 = /dev/i2o/hddj	114th I2O hard disk, whole disk
1595			    ...
1596			240 = /dev/i2o/hddx	128th I2O hard disk, whole disk
1597	
1598			Partitions are handled in the same way as for IDE
1599			disks (see major number 3) except that the limit on
1600			partitions is 15.
1601	
1602	 88 char	COMX synchronous serial card
1603			  0 = /dev/comx0	COMX channel 0
1604			  1 = /dev/comx1	COMX channel 1
1605			    ...
1606	
1607	 88 block	Seventh IDE hard disk/CD-ROM interface
1608			  0 = /dev/hdm		Master: whole disk (or CD-ROM)
1609			 64 = /dev/hdn		Slave: whole disk (or CD-ROM)
1610	
1611			Partitions are handled the same way as for the first
1612			interface (see major number 3).
1613	
1614	 89 char	I2C bus interface
1615			  0 = /dev/i2c-0	First I2C adapter
1616			  1 = /dev/i2c-1	Second I2C adapter
1617			    ...
1618	
1619	 89 block	Eighth IDE hard disk/CD-ROM interface
1620			  0 = /dev/hdo		Master: whole disk (or CD-ROM)
1621			 64 = /dev/hdp		Slave: whole disk (or CD-ROM)
1622	
1623			Partitions are handled the same way as for the first
1624			interface (see major number 3).
1625	
1626	 90 char	Memory Technology Device (RAM, ROM, Flash)
1627			  0 = /dev/mtd0		First MTD (rw)
1628			  1 = /dev/mtdr0	First MTD (ro)
1629			    ...
1630			 30 = /dev/mtd15	16th MTD (rw)
1631			 31 = /dev/mtdr15	16th MTD (ro)
1632	
1633	 90 block	Ninth IDE hard disk/CD-ROM interface
1634			  0 = /dev/hdq		Master: whole disk (or CD-ROM)
1635			 64 = /dev/hdr		Slave: whole disk (or CD-ROM)
1636	
1637			Partitions are handled the same way as for the first
1638			interface (see major number 3).
1639	
1640	 91 char	CAN-Bus devices
1641			  0 = /dev/can0		First CAN-Bus controller
1642			  1 = /dev/can1		Second CAN-Bus controller
1643			    ...
1644	
1645	 91 block	Tenth IDE hard disk/CD-ROM interface
1646			  0 = /dev/hds		Master: whole disk (or CD-ROM)
1647			 64 = /dev/hdt		Slave: whole disk (or CD-ROM)
1648	
1649			Partitions are handled the same way as for the first
1650			interface (see major number 3).
1651	
1652	 92 char	Reserved for ith Kommunikationstechnik MIC ISDN card
1653	
1654	 92 block	PPDD encrypted disk driver
1655			  0 = /dev/ppdd0	First encrypted disk
1656			  1 = /dev/ppdd1	Second encrypted disk
1657			    ...
1658	
1659			Partitions are handled in the same way as for IDE
1660			disks (see major number 3) except that the limit on
1661			partitions is 15.
1662	
1663	 93 char
1664	
1665	 93 block	NAND Flash Translation Layer filesystem
1666			  0 = /dev/nftla	First NFTL layer
1667			 16 = /dev/nftlb	Second NFTL layer
1668			    ...
1669			240 = /dev/nftlp	16th NTFL layer
1670	
1671	 94 char
1672	
1673	 94 block	IBM S/390 DASD block storage
1674	    		  0 = /dev/dasda First DASD device, major
1675	    		  1 = /dev/dasda1 First DASD device, block 1
1676		    	  2 = /dev/dasda2 First DASD device, block 2
1677	    		  3 = /dev/dasda3 First DASD device, block 3
1678	    		  4 = /dev/dasdb Second DASD device, major
1679	    		  5 = /dev/dasdb1 Second DASD device, block 1
1680	    		  6 = /dev/dasdb2 Second DASD device, block 2
1681	    		  7 = /dev/dasdb3 Second DASD device, block 3
1682			    ...
1683	
1684	 95 char	IP filter
1685			  0 = /dev/ipl		Filter control device/log file
1686			  1 = /dev/ipnat	NAT control device/log file
1687			  2 = /dev/ipstate	State information log file
1688			  3 = /dev/ipauth	Authentication control device/log file
1689			    ...
1690	
1691	 96 char	Parallel port ATAPI tape devices
1692			  0 = /dev/pt0		First parallel port ATAPI tape
1693			  1 = /dev/pt1		Second parallel port ATAPI tape
1694			    ...
1695			128 = /dev/npt0		First p.p. ATAPI tape, no rewind
1696			129 = /dev/npt1		Second p.p. ATAPI tape, no rewind
1697			    ...
1698	
1699	 96 block	Inverse NAND Flash Translation Layer
1700			  0 = /dev/inftla First INFTL layer
1701			 16 = /dev/inftlb Second INFTL layer
1702			    ...
1703			240 = /dev/inftlp	16th INTFL layer
1704	
1705	 97 char	Parallel port generic ATAPI interface
1706			  0 = /dev/pg0		First parallel port ATAPI device
1707			  1 = /dev/pg1		Second parallel port ATAPI device
1708			  2 = /dev/pg2		Third parallel port ATAPI device
1709			  3 = /dev/pg3		Fourth parallel port ATAPI device
1710	
1711			These devices support the same API as the generic SCSI
1712			devices.
1713	
1714	 98 char	Control and Measurement Device (comedi)
1715			  0 = /dev/comedi0	First comedi device
1716			  1 = /dev/comedi1	Second comedi device
1717			    ...
1718	
1719			See http://stm.lbl.gov/comedi.
1720	
1721	 98 block	User-mode virtual block device
1722			  0 = /dev/ubda		First user-mode block device
1723			 16 = /dev/udbb		Second user-mode block device
1724			    ...
1725	
1726			Partitions are handled in the same way as for IDE
1727			disks (see major number 3) except that the limit on
1728			partitions is 15.
1729	
1730			This device is used by the user-mode virtual kernel port.
1731	
1732	 99 char	Raw parallel ports
1733			  0 = /dev/parport0	First parallel port
1734			  1 = /dev/parport1	Second parallel port
1735			    ...
1736	
1737	 99 block	JavaStation flash disk
1738			  0 = /dev/jsfd		JavaStation flash disk
1739	
1740	100 char	Telephony for Linux
1741			  0 = /dev/phone0	First telephony device
1742			  1 = /dev/phone1	Second telephony device
1743			    ...
1744	
1745	101 char	Motorola DSP 56xxx board
1746			  0 = /dev/mdspstat	Status information
1747			  1 = /dev/mdsp1	First DSP board I/O controls
1748			    ...
1749			 16 = /dev/mdsp16	16th DSP board I/O controls
1750	
1751	101 block	AMI HyperDisk RAID controller
1752			  0 = /dev/amiraid/ar0	First array whole disk
1753			 16 = /dev/amiraid/ar1	Second array whole disk
1754			    ...
1755			240 = /dev/amiraid/ar15	16th array whole disk
1756	
1757			For each device, partitions are added as:
1758			  0 = /dev/amiraid/ar?	  Whole disk
1759			  1 = /dev/amiraid/ar?p1  First partition
1760			  2 = /dev/amiraid/ar?p2  Second partition
1761			    ...
1762			 15 = /dev/amiraid/ar?p15 15th partition
1763	
1764	102 char
1765	
1766	102 block	Compressed block device
1767			  0 = /dev/cbd/a	First compressed block device, whole device
1768			 16 = /dev/cbd/b	Second compressed block device, whole device
1769			    ...
1770			240 = /dev/cbd/p	16th compressed block device, whole device
1771	
1772			Partitions are handled in the same way as for IDE
1773			disks (see major number 3) except that the limit on
1774			partitions is 15.
1775	
1776	103 char	Arla network file system
1777			  0 = /dev/nnpfs0	First NNPFS device
1778			  1 = /dev/nnpfs1	Second NNPFS device
1779	
1780			Arla is a free clone of the Andrew File System, AFS.
1781			The NNPFS device gives user mode filesystem
1782			implementations a kernel presence for caching and easy
1783			mounting.  For more information about the project,
1784			write to <arla-drinkers@stacken.kth.se> or see
1785			http://www.stacken.kth.se/project/arla/
1786	
1787	103 block	Audit device
1788			  0 = /dev/audit	Audit device
1789	
1790	104 char	Flash BIOS support
1791	
1792	104 block	Compaq Next Generation Drive Array, first controller
1793			  0 = /dev/cciss/c0d0	First logical drive, whole disk
1794			 16 = /dev/cciss/c0d1	Second logical drive, whole disk
1795			    ...
1796			240 = /dev/cciss/c0d15	16th logical drive, whole disk
1797	
1798			Partitions are handled the same way as for Mylex
1799			DAC960 (see major number 48) except that the limit on
1800			partitions is 15.
1801	
1802	105 char	Comtrol VS-1000 serial controller
1803			  0 = /dev/ttyV0	First VS-1000 port
1804			  1 = /dev/ttyV1	Second VS-1000 port
1805			    ...
1806	
1807	105 block	Compaq Next Generation Drive Array, second controller
1808			  0 = /dev/cciss/c1d0	First logical drive, whole disk
1809			 16 = /dev/cciss/c1d1	Second logical drive, whole disk
1810			    ...
1811			240 = /dev/cciss/c1d15	16th logical drive, whole disk
1812	
1813			Partitions are handled the same way as for Mylex
1814			DAC960 (see major number 48) except that the limit on
1815			partitions is 15.
1816	
1817	106 char	Comtrol VS-1000 serial controller - alternate devices
1818			  0 = /dev/cuv0		First VS-1000 port
1819			  1 = /dev/cuv1		Second VS-1000 port
1820			    ...
1821	
1822	106 block	Compaq Next Generation Drive Array, third controller
1823			  0 = /dev/cciss/c2d0	First logical drive, whole disk
1824			 16 = /dev/cciss/c2d1	Second logical drive, whole disk
1825			    ...
1826			240 = /dev/cciss/c2d15	16th logical drive, whole disk
1827	
1828			Partitions are handled the same way as for Mylex
1829			DAC960 (see major number 48) except that the limit on
1830			partitions is 15.
1831	
1832	107 char	3Dfx Voodoo Graphics device
1833			  0 = /dev/3dfx		Primary 3Dfx graphics device
1834	
1835	107 block	Compaq Next Generation Drive Array, fourth controller
1836			  0 = /dev/cciss/c3d0	First logical drive, whole disk
1837			 16 = /dev/cciss/c3d1	Second logical drive, whole disk
1838			    ...
1839			240 = /dev/cciss/c3d15	16th logical drive, whole disk
1840	
1841			Partitions are handled the same way as for Mylex
1842			DAC960 (see major number 48) except that the limit on
1843			partitions is 15.
1844	
1845	108 char	Device independent PPP interface
1846			  0 = /dev/ppp		Device independent PPP interface
1847	
1848	108 block	Compaq Next Generation Drive Array, fifth controller
1849			  0 = /dev/cciss/c4d0	First logical drive, whole disk
1850			 16 = /dev/cciss/c4d1	Second logical drive, whole disk
1851			    ...
1852			240 = /dev/cciss/c4d15	16th logical drive, whole disk
1853	
1854			Partitions are handled the same way as for Mylex
1855			DAC960 (see major number 48) except that the limit on
1856			partitions is 15.
1857	
1858	109 char	Reserved for logical volume manager
1859	
1860	109 block	Compaq Next Generation Drive Array, sixth controller
1861			  0 = /dev/cciss/c5d0	First logical drive, whole disk
1862			 16 = /dev/cciss/c5d1	Second logical drive, whole disk
1863			    ...
1864			240 = /dev/cciss/c5d15	16th logical drive, whole disk
1865	
1866			Partitions are handled the same way as for Mylex
1867			DAC960 (see major number 48) except that the limit on
1868			partitions is 15.
1869	
1870	110 char	miroMEDIA Surround board
1871			  0 = /dev/srnd0	First miroMEDIA Surround board
1872			  1 = /dev/srnd1	Second miroMEDIA Surround board
1873			    ...
1874	
1875	110 block	Compaq Next Generation Drive Array, seventh controller
1876			  0 = /dev/cciss/c6d0	First logical drive, whole disk
1877			 16 = /dev/cciss/c6d1	Second logical drive, whole disk
1878			    ...
1879			240 = /dev/cciss/c6d15	16th logical drive, whole disk
1880	
1881			Partitions are handled the same way as for Mylex
1882			DAC960 (see major number 48) except that the limit on
1883			partitions is 15.
1884	
1885	111 char
1886	
1887	111 block	Compaq Next Generation Drive Array, eighth controller
1888			  0 = /dev/cciss/c7d0	First logical drive, whole disk
1889			 16 = /dev/cciss/c7d1	Second logical drive, whole disk
1890			    ...
1891			240 = /dev/cciss/c7d15	16th logical drive, whole disk
1892	
1893			Partitions are handled the same way as for Mylex
1894			DAC960 (see major number 48) except that the limit on
1895			partitions is 15.
1896	
1897	112 char	ISI serial card
1898			  0 = /dev/ttyM0	First ISI port
1899			  1 = /dev/ttyM1	Second ISI port
1900			    ...
1901	
1902			There is currently a device-naming conflict between
1903			these and PAM multimodems (major 78).
1904	
1905	112 block	IBM iSeries virtual disk
1906			  0 = /dev/iseries/vda	First virtual disk, whole disk
1907			  8 = /dev/iseries/vdb	Second virtual disk, whole disk
1908			    ...
1909			200 = /dev/iseries/vdz	26th virtual disk, whole disk
1910			208 = /dev/iseries/vdaa	27th virtual disk, whole disk
1911			    ...
1912			248 = /dev/iseries/vdaf	32nd virtual disk, whole disk
1913	
1914			Partitions are handled in the same way as for IDE
1915			disks (see major number 3) except that the limit on
1916			partitions is 7.
1917	
1918	113 char	ISI serial card - alternate devices
1919			  0 = /dev/cum0		Callout device for ttyM0
1920			  1 = /dev/cum1		Callout device for ttyM1
1921			    ...
1922	
1923	113 block	IBM iSeries virtual CD-ROM
1924			  0 = /dev/iseries/vcda	First virtual CD-ROM
1925			  1 = /dev/iseries/vcdb	Second virtual CD-ROM
1926			    ...
1927	
1928	114 char	Picture Elements ISE board
1929			  0 = /dev/ise0		First ISE board
1930			  1 = /dev/ise1		Second ISE board
1931			    ...
1932			128 = /dev/isex0	Control node for first ISE board
1933			129 = /dev/isex1	Control node for second ISE board
1934			    ...
1935	
1936			The ISE board is an embedded computer, optimized for
1937			image processing. The /dev/iseN nodes are the general
1938			I/O access to the board, the /dev/isex0 nodes command
1939			nodes used to control the board.
1940	
1941	114 block       IDE BIOS powered software RAID interfaces such as the
1942	                Promise Fastrak
1943	
1944	                  0 = /dev/ataraid/d0
1945	                  1 = /dev/ataraid/d0p1
1946	                  2 = /dev/ataraid/d0p2
1947	                  ...
1948	                 16 = /dev/ataraid/d1
1949	                 17 = /dev/ataraid/d1p1
1950	                 18 = /dev/ataraid/d1p2
1951	                  ...
1952	                255 = /dev/ataraid/d15p15
1953	
1954			Partitions are handled in the same way as for IDE
1955			disks (see major number 3) except that the limit on
1956			partitions is 15.
1957	
1958	115 char	TI link cable devices (115 was formerly the console driver speaker)
1959			  0 = /dev/tipar0    Parallel cable on first parallel port
1960			  ...
1961			  7 = /dev/tipar7    Parallel cable on seventh parallel port
1962	
1963			  8 = /dev/tiser0    Serial cable on first serial port
1964			  ...
1965			 15 = /dev/tiser7    Serial cable on seventh serial port
1966	
1967			 16 = /dev/tiusb0    First USB cable
1968			  ...
1969			 47 = /dev/tiusb31   32nd USB cable
1970	
1971	115 block       NetWare (NWFS) Devices (0-255)
1972	
1973	                The NWFS (NetWare) devices are used to present a
1974	                collection of NetWare Mirror Groups or NetWare
1975	                Partitions as a logical storage segment for
1976	                use in mounting NetWare volumes.  A maximum of
1977	                256 NetWare volumes can be supported in a single
1978	                machine.
1979	
1980	                http://cgfa.telepac.pt/ftp2/kernel.org/linux/kernel/people/jmerkey/nwfs/
1981	
1982	                0 = /dev/nwfs/v0    First NetWare (NWFS) Logical Volume
1983	                1 = /dev/nwfs/v1    Second NetWare (NWFS) Logical Volume
1984	                2 = /dev/nwfs/v2    Third NetWare (NWFS) Logical Volume
1985	                      ...
1986	                255 = /dev/nwfs/v255    Last NetWare (NWFS) Logical Volume
1987	
1988	116 char	Advanced Linux Sound Driver (ALSA)
1989	
1990	116 block       MicroMemory battery backed RAM adapter (NVRAM)
1991	                Supports 16 boards, 15 partitions each.
1992	                Requested by neilb at cse.unsw.edu.au.
1993	
1994			 0 = /dev/umem/d0      Whole of first board
1995			 1 = /dev/umem/d0p1    First partition of first board
1996			 2 = /dev/umem/d0p2    Second partition of first board
1997			15 = /dev/umem/d0p15   15th partition of first board
1998	
1999			16 = /dev/umem/d1      Whole of second board
2000			17 = /dev/umem/d1p1    First partition of second board
2001			    ...
2002			255= /dev/umem/d15p15  15th partition of 16th board.
2003	
2004	117 char	COSA/SRP synchronous serial card
2005			  0 = /dev/cosa0c0	1st board, 1st channel
2006			  1 = /dev/cosa0c1	1st board, 2nd channel
2007			    ...
2008			 16 = /dev/cosa1c0	2nd board, 1st channel
2009			 17 = /dev/cosa1c1	2nd board, 2nd channel
2010			    ...
2011	
2012	117 block       Enterprise Volume Management System (EVMS)
2013	
2014	                The EVMS driver uses a layered, plug-in model to provide
2015	                unparalleled flexibility and extensibility in managing
2016	                storage.  This allows for easy expansion or customization
2017	                of various levels of volume management.  Requested by
2018	                Mark Peloquin (peloquin at us.ibm.com).
2019	
2020	                Note: EVMS populates and manages all the devnodes in
2021	                /dev/evms.
2022	
2023	                http://sf.net/projects/evms
2024	
2025	                  0 = /dev/evms/block_device   EVMS block device
2026	                  1 = /dev/evms/legacyname1    First EVMS legacy device
2027	                  2 = /dev/evms/legacyname2    Second EVMS legacy device
2028	                    ...
2029	                    Both ranges can grow (down or up) until they meet.
2030	                    ...
2031	                254 = /dev/evms/EVMSname2      Second EVMS native device
2032	                255 = /dev/evms/EVMSname1      First EVMS native device
2033	
2034	                Note: legacyname(s) are derived from the normal legacy
2035	                device names.  For example, /dev/hda5 would become
2036	                /dev/evms/hda5.
2037	
2038	118 char	IBM Cryptographic Accelerator
2039			  0 = /dev/ica	Virtual interface to all IBM Crypto Accelerators
2040			  1 = /dev/ica0	IBMCA Device 0
2041			  2 = /dev/ica1	IBMCA Device 1
2042			    ...
2043	
2044	119 char	VMware virtual network control
2045			  0 = /dev/vnet0	1st virtual network
2046			  1 = /dev/vnet1	2nd virtual network
2047			    ...
2048	
2049	120-127 char	LOCAL/EXPERIMENTAL USE
2050	
2051	120-127 block	LOCAL/EXPERIMENTAL USE
2052			Allocated for local/experimental use.  For devices not
2053			assigned official numbers, these ranges should be
2054			used in order to avoid conflicting with future assignments.
2055	
2056	128-135 char	Unix98 PTY masters
2057	
2058			These devices should not have corresponding device
2059			nodes; instead they should be accessed through the
2060			/dev/ptmx cloning interface.
2061	
2062	128 block       SCSI disk devices (128-143)
2063	                  0 = /dev/sddy         129th SCSI disk whole disk
2064	                 16 = /dev/sddz         130th SCSI disk whole disk
2065	                 32 = /dev/sdea         131th SCSI disk whole disk
2066	                    ...
2067	                240 = /dev/sden         144th SCSI disk whole disk
2068	
2069			Partitions are handled in the same way as for IDE
2070			disks (see major number 3) except that the limit on
2071			partitions is 15.
2072	
2073	129 block       SCSI disk devices (144-159)
2074	                  0 = /dev/sdeo         145th SCSI disk whole disk
2075	                 16 = /dev/sdep         146th SCSI disk whole disk
2076	                 32 = /dev/sdeq         147th SCSI disk whole disk
2077	                    ...
2078	                240 = /dev/sdfd         160th 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	130 char 	(Misc devices)
2085	
2086	130 block       SCSI disk devices (160-175)
2087	                  0 = /dev/sdfe         161st SCSI disk whole disk
2088	                 16 = /dev/sdff         162nd SCSI disk whole disk
2089	                 32 = /dev/sdfg         163rd SCSI disk whole disk
2090	                    ...
2091	                240 = /dev/sdft         176th SCSI disk whole disk
2092	
2093			Partitions are handled in the same way as for IDE
2094			disks (see major number 3) except that the limit on
2095			partitions is 15.
2096	
2097	131 block       SCSI disk devices (176-191)
2098	                  0 = /dev/sdfu         177th SCSI disk whole disk
2099	                 16 = /dev/sdfv         178th SCSI disk whole disk
2100	                 32 = /dev/sdfw         179th SCSI disk whole disk
2101	                    ...
2102	                240 = /dev/sdgj         192nd 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	132 block       SCSI disk devices (192-207)
2109	                  0 = /dev/sdgk         193rd SCSI disk whole disk
2110	                 16 = /dev/sdgl         194th SCSI disk whole disk
2111	                 32 = /dev/sdgm         195th SCSI disk whole disk
2112	                    ...
2113	                240 = /dev/sdgz         208th 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	133 block       SCSI disk devices (208-223)
2120	                  0 = /dev/sdha         209th SCSI disk whole disk
2121	                 16 = /dev/sdhb         210th SCSI disk whole disk
2122	                 32 = /dev/sdhc         211th SCSI disk whole disk
2123	                    ...
2124	                240 = /dev/sdhp         224th 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	134 block       SCSI disk devices (224-239)
2131	                  0 = /dev/sdhq         225th SCSI disk whole disk
2132	                 16 = /dev/sdhr         226th SCSI disk whole disk
2133	                 32 = /dev/sdhs         227th SCSI disk whole disk
2134	                    ...
2135	                240 = /dev/sdif         240th 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	135 block       SCSI disk devices (240-255)
2142	                  0 = /dev/sdig         241st SCSI disk whole disk
2143	                 16 = /dev/sdih         242nd SCSI disk whole disk
2144	                 32 = /dev/sdih         243rd SCSI disk whole disk
2145	                    ...
2146	                240 = /dev/sdiv         256th 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	136-143 char	Unix98 PTY slaves
2153			  0 = /dev/pts/0	First Unix98 pseudo-TTY
2154			  1 = /dev/pts/1	Second Unix98 pseudo-TTY
2155			    ...
2156	
2157			These device nodes are automatically generated with
2158			the proper permissions and modes by mounting the
2159			devpts filesystem onto /dev/pts with the appropriate
2160			mount options (distribution dependent, however, on
2161			*most* distributions the appropriate options are
2162			"mode=0620,gid=<gid of the "tty" group>".)
2163	
2164	136 block	Mylex DAC960 PCI RAID controller; ninth controller
2165			  0 = /dev/rd/c8d0	First disk, whole disk
2166			  8 = /dev/rd/c8d1	Second disk, whole disk
2167			    ...
2168			248 = /dev/rd/c8d31	32nd disk, whole disk
2169	
2170			Partitions are handled as for major 48.
2171	
2172	137 block	Mylex DAC960 PCI RAID controller; tenth controller
2173			  0 = /dev/rd/c9d0	First disk, whole disk
2174			  8 = /dev/rd/c9d1	Second disk, whole disk
2175			    ...
2176			248 = /dev/rd/c9d31	32nd disk, whole disk
2177	
2178			Partitions are handled as for major 48.
2179	
2180	138 block	Mylex DAC960 PCI RAID controller; eleventh controller
2181			  0 = /dev/rd/c10d0	First disk, whole disk
2182			  8 = /dev/rd/c10d1	Second disk, whole disk
2183			    ...
2184			248 = /dev/rd/c10d31	32nd disk, whole disk
2185	
2186			Partitions are handled as for major 48.
2187	
2188	139 block	Mylex DAC960 PCI RAID controller; twelfth controller
2189			  0 = /dev/rd/c11d0	First disk, whole disk
2190			  8 = /dev/rd/c11d1	Second disk, whole disk
2191			    ...
2192			248 = /dev/rd/c11d31	32nd disk, whole disk
2193	
2194			Partitions are handled as for major 48.
2195	
2196	140 block	Mylex DAC960 PCI RAID controller; thirteenth controller
2197			  0 = /dev/rd/c12d0	First disk, whole disk
2198			  8 = /dev/rd/c12d1	Second disk, whole disk
2199			    ...
2200			248 = /dev/rd/c12d31	32nd disk, whole disk
2201	
2202			Partitions are handled as for major 48.
2203	
2204	141 block	Mylex DAC960 PCI RAID controller; fourteenth controller
2205			  0 = /dev/rd/c13d0	First disk, whole disk
2206			  8 = /dev/rd/c13d1	Second disk, whole disk
2207			    ...
2208			248 = /dev/rd/c13d31	32nd disk, whole disk
2209	
2210			Partitions are handled as for major 48.
2211	
2212	142 block	Mylex DAC960 PCI RAID controller; fifteenth controller
2213			  0 = /dev/rd/c14d0	First disk, whole disk
2214			  8 = /dev/rd/c14d1	Second disk, whole disk
2215			    ...
2216			248 = /dev/rd/c14d31	32nd disk, whole disk
2217	
2218			Partitions are handled as for major 48.
2219	
2220	143 block	Mylex DAC960 PCI RAID controller; sixteenth controller
2221			  0 = /dev/rd/c15d0	First disk, whole disk
2222			  8 = /dev/rd/c15d1	Second disk, whole disk
2223			    ...
2224			248 = /dev/rd/c15d31	32nd disk, whole disk
2225	
2226			Partitions are handled as for major 48.
2227	
2228	144 char	Encapsulated PPP
2229			  0 = /dev/pppox0	First PPP over Ethernet
2230			    ...
2231			 63 = /dev/pppox63	64th PPP over Ethernet
2232	
2233			This is primarily used for ADSL.
2234	
2235			The SST 5136-DN DeviceNet interface driver has been
2236			relocated to major 183 due to an unfortunate conflict.
2237	
2238	144 block	Expansion Area #1 for more non-device (e.g. NFS) mounts
2239			  0 = mounted device 256
2240			255 = mounted device 511
2241	
2242	145 char	SAM9407-based soundcard
2243			  0 = /dev/sam0_mixer
2244			  1 = /dev/sam0_sequencer
2245			  2 = /dev/sam0_midi00
2246			  3 = /dev/sam0_dsp
2247			  4 = /dev/sam0_audio
2248			  6 = /dev/sam0_sndstat
2249			 18 = /dev/sam0_midi01
2250			 34 = /dev/sam0_midi02
2251			 50 = /dev/sam0_midi03
2252			 64 = /dev/sam1_mixer
2253			    ...
2254			128 = /dev/sam2_mixer
2255			    ...
2256			192 = /dev/sam3_mixer
2257			    ...
2258	
2259			Device functions match OSS, but offer a number of
2260			addons, which are sam9407 specific.  OSS can be
2261			operated simultaneously, taking care of the codec.
2262	
2263	145 block	Expansion Area #2 for more non-device (e.g. NFS) mounts
2264			  0 = mounted device 512
2265			255 = mounted device 767
2266	
2267	146 char	SYSTRAM SCRAMNet mirrored-memory network
2268			  0 = /dev/scramnet0	First SCRAMNet device
2269			  1 = /dev/scramnet1	Second SCRAMNet device
2270			    ...
2271	
2272	146 block	Expansion Area #3 for more non-device (e.g. NFS) mounts
2273			  0 = mounted device 768
2274			255 = mounted device 1023
2275	
2276	147 char	Aureal Semiconductor Vortex Audio device
2277			  0 = /dev/aureal0	First Aureal Vortex
2278			  1 = /dev/aureal1	Second Aureal Vortex
2279			    ...
2280	
2281	147 block	Distributed Replicated Block Device (DRBD)
2282			  0 = /dev/drbd0	First DRBD device
2283			  1 = /dev/drbd1	Second DRBD device
2284			    ...
2285	
2286	148 char	Technology Concepts serial card
2287			  0 = /dev/ttyT0	First TCL port
2288			  1 = /dev/ttyT1	Second TCL port
2289			    ...
2290	
2291	149 char	Technology Concepts serial card - alternate devices
2292			  0 = /dev/cut0		Callout device for ttyT0
2293			  1 = /dev/cut0		Callout device for ttyT1
2294			    ...
2295	
2296	150 char	Real-Time Linux FIFOs
2297			  0 = /dev/rtf0		First RTLinux FIFO
2298			  1 = /dev/rtf1		Second RTLinux FIFO
2299			    ...
2300	
2301	151 char	DPT I2O SmartRaid V controller
2302			  0 = /dev/dpti0	First DPT I2O adapter
2303			  1 = /dev/dpti1	Second DPT I2O adapter
2304			    ...
2305	
2306	152 char	EtherDrive Control Device
2307			  0 = /dev/etherd/ctl	Connect/Disconnect an EtherDrive
2308			  1 = /dev/etherd/err	Monitor errors
2309			  2 = /dev/etherd/raw	Raw AoE packet monitor
2310	
2311	152 block	EtherDrive Block Devices
2312			  0 = /dev/etherd/0	EtherDrive 0
2313			    ...
2314			255 = /dev/etherd/255	EtherDrive 255
2315	
2316	153 char	SPI Bus Interface (sometimes referred to as MicroWire)
2317			  0 = /dev/spi0		First SPI device on the bus
2318			  1 = /dev/spi1		Second SPI device on the bus
2319			    ...
2320			 15 = /dev/spi15	Sixteenth SPI device on the bus
2321	
2322	153 block	Enhanced Metadisk RAID (EMD) storage units
2323			  0 = /dev/emd/0	First unit
2324			  1 = /dev/emd/0p1	Partition 1 on First unit
2325			  2 = /dev/emd/0p2	Partition 2 on First unit
2326			    ...
2327			 15 = /dev/emd/0p15	Partition 15 on First unit
2328	
2329			 16 = /dev/emd/1	Second unit
2330			 32 = /dev/emd/2	Third unit
2331			    ...
2332			240 = /dev/emd/15	Sixteenth unit
2333	
2334			Partitions are handled in the same way as for IDE
2335			disks (see major number 3) except that the limit on
2336			partitions is 15.
2337	
2338	154 char	Specialix RIO serial card
2339			  0 = /dev/ttySR0	First RIO port
2340			    ...
2341			255 = /dev/ttySR255	256th RIO port
2342	
2343	155 char	Specialix RIO serial card - alternate devices
2344			  0 = /dev/cusr0	Callout device for ttySR0
2345			    ...
2346			255 = /dev/cusr255	Callout device for ttySR255
2347	
2348	156 char	Specialix RIO serial card
2349			  0 = /dev/ttySR256	257th RIO port
2350			    ...
2351			255 = /dev/ttySR511	512th RIO port
2352	
2353	157 char	Specialix RIO serial card - alternate devices
2354			  0 = /dev/cusr256	Callout device for ttySR256
2355			    ...
2356			255 = /dev/cusr511	Callout device for ttySR511
2357	
2358	158 char	Dialogic GammaLink fax driver
2359			  0 = /dev/gfax0	GammaLink channel 0
2360			  1 = /dev/gfax1	GammaLink channel 1
2361			    ...
2362	
2363	159 char	RESERVED
2364	
2365	159 block	RESERVED
2366	
2367	160 char	General Purpose Instrument Bus (GPIB)
2368			  0 = /dev/gpib0	First GPIB bus
2369			  1 = /dev/gpib1	Second GPIB bus
2370			    ...
2371	
2372	160 block       Carmel 8-port SATA Disks on First Controller
2373			  0 = /dev/carmel/0     SATA disk 0 whole disk
2374			  1 = /dev/carmel/0p1   SATA disk 0 partition 1
2375			    ...
2376			 31 = /dev/carmel/0p31  SATA disk 0 partition 31
2377	
2378			 32 = /dev/carmel/1     SATA disk 1 whole disk
2379			 64 = /dev/carmel/2     SATA disk 2 whole disk
2380			    ...
2381			224 = /dev/carmel/7     SATA disk 7 whole disk
2382	
2383			Partitions are handled in the same way as for IDE
2384			disks (see major number 3) except that the limit on
2385			partitions is 31.
2386	
2387	161 char	IrCOMM devices (IrDA serial/parallel emulation)
2388			  0 = /dev/ircomm0	First IrCOMM device
2389			  1 = /dev/ircomm1	Second IrCOMM device
2390			    ...
2391			 16 = /dev/irlpt0	First IrLPT device
2392			 17 = /dev/irlpt1	Second IrLPT device
2393			    ...
2394	
2395	161 block       Carmel 8-port SATA Disks on Second Controller
2396			  0 = /dev/carmel/8     SATA disk 8 whole disk
2397			  1 = /dev/carmel/8p1   SATA disk 8 partition 1
2398			    ...
2399			 31 = /dev/carmel/8p31  SATA disk 8 partition 31
2400	
2401			 32 = /dev/carmel/9     SATA disk 9 whole disk
2402			 64 = /dev/carmel/10    SATA disk 10 whole disk
2403			    ...
2404			224 = /dev/carmel/15    SATA disk 15 whole disk
2405	
2406			Partitions are handled in the same way as for IDE
2407			disks (see major number 3) except that the limit on
2408			partitions is 31.
2409	
2410	162 char	Raw block device interface
2411			  0 = /dev/rawctl	Raw I/O control device
2412			  1 = /dev/raw/raw1	First raw I/O device
2413			  2 = /dev/raw/raw2	Second raw I/O device
2414			    ...
2415	                 max minor number of raw device is set by kernel config
2416	                 MAX_RAW_DEVS or raw module parameter 'max_raw_devs'
2417	
2418	163 char
2419	
2420	164 char	Chase Research AT/PCI-Fast serial card
2421			  0 = /dev/ttyCH0	AT/PCI-Fast board 0, port 0
2422			    ...
2423			 15 = /dev/ttyCH15	AT/PCI-Fast board 0, port 15
2424			 16 = /dev/ttyCH16	AT/PCI-Fast board 1, port 0
2425			    ...
2426			 31 = /dev/ttyCH31	AT/PCI-Fast board 1, port 15
2427			 32 = /dev/ttyCH32	AT/PCI-Fast board 2, port 0
2428			    ...
2429			 47 = /dev/ttyCH47	AT/PCI-Fast board 2, port 15
2430			 48 = /dev/ttyCH48	AT/PCI-Fast board 3, port 0
2431			    ...
2432			 63 = /dev/ttyCH63	AT/PCI-Fast board 3, port 15
2433	
2434	165 char	Chase Research AT/PCI-Fast serial card - alternate devices
2435			  0 = /dev/cuch0	Callout device for ttyCH0
2436			    ...
2437			 63 = /dev/cuch63	Callout device for ttyCH63
2438	
2439	166 char	ACM USB modems
2440			  0 = /dev/ttyACM0	First ACM modem
2441			  1 = /dev/ttyACM1	Second ACM modem
2442			    ...
2443	
2444	167 char	ACM USB modems - alternate devices
2445			  0 = /dev/cuacm0	Callout device for ttyACM0
2446			  1 = /dev/cuacm1	Callout device for ttyACM1
2447			    ...
2448	
2449	168 char	Eracom CSA7000 PCI encryption adaptor
2450			  0 = /dev/ecsa0	First CSA7000
2451			  1 = /dev/ecsa1	Second CSA7000
2452			    ...
2453	
2454	169 char	Eracom CSA8000 PCI encryption adaptor
2455			  0 = /dev/ecsa8-0	First CSA8000
2456			  1 = /dev/ecsa8-1	Second CSA8000
2457			    ...
2458	
2459	170 char	AMI MegaRAC remote access controller
2460			  0 = /dev/megarac0	First MegaRAC card
2461			  1 = /dev/megarac1	Second MegaRAC card
2462			    ...
2463	
2464	171 char	Reserved for IEEE 1394 (Firewire)
2465	
2466	172 char	Moxa Intellio serial card
2467			  0 = /dev/ttyMX0	First Moxa port
2468			  1 = /dev/ttyMX1	Second Moxa port
2469			    ...
2470			127 = /dev/ttyMX127	128th Moxa port
2471			128 = /dev/moxactl	Moxa control port
2472	
2473	173 char	Moxa Intellio serial card - alternate devices
2474			  0 = /dev/cumx0	Callout device for ttyMX0
2475			  1 = /dev/cumx1	Callout device for ttyMX1
2476			    ...
2477			127 = /dev/cumx127	Callout device for ttyMX127
2478	
2479	174 char	SmartIO serial card
2480			  0 = /dev/ttySI0	First SmartIO port
2481			  1 = /dev/ttySI1	Second SmartIO port
2482			    ...
2483	
2484	175 char	SmartIO serial card - alternate devices
2485			  0 = /dev/cusi0	Callout device for ttySI0
2486			  1 = /dev/cusi1	Callout device for ttySI1
2487			    ...
2488	
2489	176 char	nCipher nFast PCI crypto accelerator
2490			  0 = /dev/nfastpci0	First nFast PCI device
2491			  1 = /dev/nfastpci1	First nFast PCI device
2492			    ...
2493	
2494	177 char	TI PCILynx memory spaces
2495			  0 = /dev/pcilynx/aux0	 AUX space of first PCILynx card
2496			    ...
2497			 15 = /dev/pcilynx/aux15 AUX space of 16th PCILynx card
2498			 16 = /dev/pcilynx/rom0	 ROM space of first PCILynx card
2499			    ...
2500			 31 = /dev/pcilynx/rom15 ROM space of 16th PCILynx card
2501			 32 = /dev/pcilynx/ram0	 RAM space of first PCILynx card
2502			    ...
2503			 47 = /dev/pcilynx/ram15 RAM space of 16th PCILynx card
2504	
2505	178 char	Giganet cLAN1xxx virtual interface adapter
2506			  0 = /dev/clanvi0	First cLAN adapter
2507			  1 = /dev/clanvi1	Second cLAN adapter
2508			    ...
2509	
2510	179 block       MMC block devices
2511			  0 = /dev/mmcblk0      First SD/MMC card
2512			  1 = /dev/mmcblk0p1    First partition on first MMC card
2513			  8 = /dev/mmcblk1      Second SD/MMC card
2514			    ...
2515	
2516			The start of next SD/MMC card can be configured with
2517			CONFIG_MMC_BLOCK_MINORS, or overridden at boot/modprobe
2518			time using the mmcblk.perdev_minors option. That would
2519			bump the offset between each card to be the configured
2520			value instead of the default 8.
2521	
2522	179 char	CCube DVXChip-based PCI products
2523			  0 = /dev/dvxirq0	First DVX device
2524			  1 = /dev/dvxirq1	Second DVX device
2525			    ...
2526	
2527	180 char	USB devices
2528			  0 = /dev/usb/lp0	First USB printer
2529			    ...
2530			 15 = /dev/usb/lp15	16th USB printer
2531			 48 = /dev/usb/scanner0	First USB scanner
2532			    ...
2533			 63 = /dev/usb/scanner15 16th USB scanner
2534			 64 = /dev/usb/rio500	Diamond Rio 500
2535			 65 = /dev/usb/usblcd	USBLCD Interface (info@usblcd.de)
2536			 66 = /dev/usb/cpad0	Synaptics cPad (mouse/LCD)
2537			 96 = /dev/usb/hiddev0	1st USB HID device
2538			    ...
2539			111 = /dev/usb/hiddev15	16th USB HID device
2540			112 = /dev/usb/auer0	1st auerswald ISDN device
2541			    ...
2542			127 = /dev/usb/auer15	16th auerswald ISDN device
2543			128 = /dev/usb/brlvgr0	First Braille Voyager device
2544			    ...
2545			131 = /dev/usb/brlvgr3	Fourth Braille Voyager device
2546			132 = /dev/usb/idmouse	ID Mouse (fingerprint scanner) device
2547			133 = /dev/usb/sisusbvga1	First SiSUSB VGA device
2548			    ...
2549			140 = /dev/usb/sisusbvga8	Eighth SISUSB VGA device
2550			144 = /dev/usb/lcd	USB LCD device
2551			160 = /dev/usb/legousbtower0	1st USB Legotower device
2552			    ...
2553			175 = /dev/usb/legousbtower15	16th USB Legotower device
2554			176 = /dev/usb/usbtmc1	First USB TMC device
2555			   ...
2556			191 = /dev/usb/usbtmc16	16th USB TMC device
2557			192 = /dev/usb/yurex1	First USB Yurex device
2558			   ...
2559			209 = /dev/usb/yurex16	16th USB Yurex device
2560	
2561	180 block	USB block devices
2562			  0 = /dev/uba		First USB block device
2563			  8 = /dev/ubb		Second USB block device
2564			 16 = /dev/ubc		Third USB block device
2565	 		    ...
2566	
2567	181 char	Conrad Electronic parallel port radio clocks
2568			  0 = /dev/pcfclock0	First Conrad radio clock
2569			  1 = /dev/pcfclock1	Second Conrad radio clock
2570			    ...
2571	
2572	182 char	Picture Elements THR2 binarizer
2573			  0 = /dev/pethr0	First THR2 board
2574			  1 = /dev/pethr1	Second THR2 board
2575			    ...
2576	
2577	183 char	SST 5136-DN DeviceNet interface
2578			  0 = /dev/ss5136dn0	First DeviceNet interface
2579			  1 = /dev/ss5136dn1	Second DeviceNet interface
2580			    ...
2581	
2582			This device used to be assigned to major number 144.
2583			It had to be moved due to an unfortunate conflict.
2584	
2585	184 char	Picture Elements' video simulator/sender
2586			  0 = /dev/pevss0	First sender board
2587			  1 = /dev/pevss1	Second sender board
2588			    ...
2589	
2590	185 char	InterMezzo high availability file system
2591			  0 = /dev/intermezzo0	First cache manager
2592			  1 = /dev/intermezzo1	Second cache manager
2593			    ...
2594	
2595			See http://web.archive.org/web/20080115195241/
2596			http://inter-mezzo.org/index.html
2597	
2598	186 char	Object-based storage control device
2599			  0 = /dev/obd0		First obd control device
2600			  1 = /dev/obd1		Second obd control device
2601			    ...
2602	
2603			See ftp://ftp.lustre.org/pub/obd for code and information.
2604	
2605	187 char	DESkey hardware encryption device
2606			  0 = /dev/deskey0	First DES key
2607			  1 = /dev/deskey1	Second DES key
2608			    ...
2609	
2610	188 char	USB serial converters
2611			  0 = /dev/ttyUSB0	First USB serial converter
2612			  1 = /dev/ttyUSB1	Second USB serial converter
2613			    ...
2614	
2615	189 char	USB serial converters - alternate devices
2616			  0 = /dev/cuusb0	Callout device for ttyUSB0
2617			  1 = /dev/cuusb1	Callout device for ttyUSB1
2618			    ...
2619	
2620	190 char	Kansas City tracker/tuner card
2621			  0 = /dev/kctt0	First KCT/T card
2622			  1 = /dev/kctt1	Second KCT/T card
2623			    ...
2624	
2625	191 char	Reserved for PCMCIA
2626	
2627	192 char	Kernel profiling interface
2628			  0 = /dev/profile	Profiling control device
2629			  1 = /dev/profile0	Profiling device for CPU 0
2630			  2 = /dev/profile1	Profiling device for CPU 1
2631			    ...
2632	
2633	193 char	Kernel event-tracing interface
2634			  0 = /dev/trace	Tracing control device
2635			  1 = /dev/trace0	Tracing device for CPU 0
2636			  2 = /dev/trace1	Tracing device for CPU 1
2637			    ...
2638	
2639	194 char	linVideoStreams (LINVS)
2640			  0 = /dev/mvideo/status0	Video compression status
2641			  1 = /dev/mvideo/stream0	Video stream
2642			  2 = /dev/mvideo/frame0	Single compressed frame
2643			  3 = /dev/mvideo/rawframe0	Raw uncompressed frame
2644			  4 = /dev/mvideo/codec0	Direct codec access
2645			  5 = /dev/mvideo/video4linux0	Video4Linux compatibility
2646	
2647			 16 = /dev/mvideo/status1	Second device
2648			    ...
2649			 32 = /dev/mvideo/status2	Third device
2650			    ...
2651			    ...
2652			240 = /dev/mvideo/status15	16th device
2653			    ...
2654	
2655	195 char	Nvidia graphics devices
2656			  0 = /dev/nvidia0		First Nvidia card
2657			  1 = /dev/nvidia1		Second Nvidia card
2658			    ...
2659			255 = /dev/nvidiactl		Nvidia card control device
2660	
2661	196 char	Tormenta T1 card
2662			  0 = /dev/tor/0		Master control channel for all cards
2663			  1 = /dev/tor/1		First DS0
2664			  2 = /dev/tor/2		Second DS0
2665			    ...
2666			 48 = /dev/tor/48		48th DS0
2667			 49 = /dev/tor/49		First pseudo-channel
2668			 50 = /dev/tor/50		Second pseudo-channel
2669			    ...
2670	
2671	197 char	OpenTNF tracing facility
2672			  0 = /dev/tnf/t0		Trace 0 data extraction
2673			  1 = /dev/tnf/t1		Trace 1 data extraction
2674			    ...
2675			128 = /dev/tnf/status		Tracing facility status
2676			130 = /dev/tnf/trace		Tracing device
2677	
2678	198 char	Total Impact TPMP2 quad coprocessor PCI card
2679			  0 = /dev/tpmp2/0		First card
2680			  1 = /dev/tpmp2/1		Second card
2681			    ...
2682	
2683	199 char	Veritas volume manager (VxVM) volumes
2684			  0 = /dev/vx/rdsk/*/*		First volume
2685			  1 = /dev/vx/rdsk/*/*		Second volume
2686			    ...
2687	
2688	199 block	Veritas volume manager (VxVM) volumes
2689			  0 = /dev/vx/dsk/*/*		First volume
2690			  1 = /dev/vx/dsk/*/*		Second volume
2691			    ...
2692	
2693			The namespace in these directories is maintained by
2694			the user space VxVM software.
2695	
2696	200 char	Veritas VxVM configuration interface
2697	                  0 = /dev/vx/config		Configuration access node
2698	                  1 = /dev/vx/trace		Volume i/o trace access node
2699	                  2 = /dev/vx/iod		Volume i/o daemon access node
2700	                  3 = /dev/vx/info		Volume information access node
2701	                  4 = /dev/vx/task		Volume tasks access node
2702	                  5 = /dev/vx/taskmon		Volume tasks monitor daemon
2703	
2704	201 char	Veritas VxVM dynamic multipathing driver
2705			  0 = /dev/vx/rdmp/*		First multipath device
2706			  1 = /dev/vx/rdmp/*		Second multipath device
2707			    ...
2708	201 block	Veritas VxVM dynamic multipathing driver
2709			  0 = /dev/vx/dmp/*		First multipath device
2710			  1 = /dev/vx/dmp/*		Second multipath device
2711			    ...
2712	
2713			The namespace in these directories is maintained by
2714			the user space VxVM software.
2715	
2716	202 char	CPU model-specific registers
2717			  0 = /dev/cpu/0/msr		MSRs on CPU 0
2718			  1 = /dev/cpu/1/msr		MSRs on CPU 1
2719			    ...
2720	
2721	202 block	Xen Virtual Block Device
2722			  0 = /dev/xvda       First Xen VBD whole disk
2723			  16 = /dev/xvdb      Second Xen VBD whole disk
2724			  32 = /dev/xvdc      Third Xen VBD whole disk
2725			    ...
2726			  240 = /dev/xvdp     Sixteenth Xen VBD whole disk
2727	
2728	                Partitions are handled in the same way as for IDE
2729	                disks (see major number 3) except that the limit on
2730	                partitions is 15.
2731	
2732	203 char	CPU CPUID information
2733			  0 = /dev/cpu/0/cpuid		CPUID on CPU 0
2734			  1 = /dev/cpu/1/cpuid		CPUID on CPU 1
2735			    ...
2736	
2737	204 char	Low-density serial ports
2738			  0 = /dev/ttyLU0		LinkUp Systems L72xx UART - port 0
2739			  1 = /dev/ttyLU1		LinkUp Systems L72xx UART - port 1
2740			  2 = /dev/ttyLU2		LinkUp Systems L72xx UART - port 2
2741			  3 = /dev/ttyLU3		LinkUp Systems L72xx UART - port 3
2742			  4 = /dev/ttyFB0		Intel Footbridge (ARM)
2743			  5 = /dev/ttySA0		StrongARM builtin serial port 0
2744			  6 = /dev/ttySA1		StrongARM builtin serial port 1
2745			  7 = /dev/ttySA2		StrongARM builtin serial port 2
2746			  8 = /dev/ttySC0		SCI serial port (SuperH) - port 0
2747			  9 = /dev/ttySC1		SCI serial port (SuperH) - port 1
2748			 10 = /dev/ttySC2		SCI serial port (SuperH) - port 2
2749			 11 = /dev/ttySC3		SCI serial port (SuperH) - port 3
2750			 12 = /dev/ttyFW0		Firmware console - port 0
2751			 13 = /dev/ttyFW1		Firmware console - port 1
2752			 14 = /dev/ttyFW2		Firmware console - port 2
2753			 15 = /dev/ttyFW3		Firmware console - port 3
2754			 16 = /dev/ttyAM0		ARM "AMBA" serial port 0
2755			    ...
2756			 31 = /dev/ttyAM15		ARM "AMBA" serial port 15
2757			 32 = /dev/ttyDB0		DataBooster serial port 0
2758			    ...
2759			 39 = /dev/ttyDB7		DataBooster serial port 7
2760			 40 = /dev/ttySG0		SGI Altix console port
2761			 41 = /dev/ttySMX0		Motorola i.MX - port 0
2762			 42 = /dev/ttySMX1		Motorola i.MX - port 1
2763			 43 = /dev/ttySMX2		Motorola i.MX - port 2
2764			 44 = /dev/ttyMM0		Marvell MPSC - port 0
2765			 45 = /dev/ttyMM1		Marvell MPSC - port 1
2766			 46 = /dev/ttyCPM0		PPC CPM (SCC or SMC) - port 0
2767			    ...
2768			 47 = /dev/ttyCPM5		PPC CPM (SCC or SMC) - port 5
2769			 50 = /dev/ttyIOC0		Altix serial card
2770			    ...
2771			 81 = /dev/ttyIOC31		Altix serial card
2772			 82 = /dev/ttyVR0		NEC VR4100 series SIU
2773			 83 = /dev/ttyVR1		NEC VR4100 series DSIU
2774			 84 = /dev/ttyIOC84		Altix ioc4 serial card
2775			    ...
2776			 115 = /dev/ttyIOC115		Altix ioc4 serial card
2777			 116 = /dev/ttySIOC0		Altix ioc3 serial card
2778			    ...
2779			 147 = /dev/ttySIOC31		Altix ioc3 serial card
2780			 148 = /dev/ttyPSC0		PPC PSC - port 0
2781			    ...
2782			 153 = /dev/ttyPSC5		PPC PSC - port 5
2783			 154 = /dev/ttyAT0		ATMEL serial port 0
2784			    ...
2785			 169 = /dev/ttyAT15		ATMEL serial port 15
2786			 170 = /dev/ttyNX0		Hilscher netX serial port 0
2787			    ...
2788			 185 = /dev/ttyNX15		Hilscher netX serial port 15
2789			 186 = /dev/ttyJ0		JTAG1 DCC protocol based serial port emulation
2790			 187 = /dev/ttyUL0		Xilinx uartlite - port 0
2791			    ...
2792			 190 = /dev/ttyUL3		Xilinx uartlite - port 3
2793			 191 = /dev/xvc0		Xen virtual console - port 0
2794			 192 = /dev/ttyPZ0		pmac_zilog - port 0
2795			    ...
2796			 195 = /dev/ttyPZ3		pmac_zilog - port 3
2797			 196 = /dev/ttyTX0		TX39/49 serial port 0
2798			    ...
2799			 204 = /dev/ttyTX7		TX39/49 serial port 7
2800			 205 = /dev/ttySC0		SC26xx serial port 0
2801			 206 = /dev/ttySC1		SC26xx serial port 1
2802			 207 = /dev/ttySC2		SC26xx serial port 2
2803			 208 = /dev/ttySC3		SC26xx serial port 3
2804			 209 = /dev/ttyMAX0		MAX3100 serial port 0
2805			 210 = /dev/ttyMAX1		MAX3100 serial port 1
2806			 211 = /dev/ttyMAX2		MAX3100 serial port 2
2807			 212 = /dev/ttyMAX3		MAX3100 serial port 3
2808	
2809	205 char	Low-density serial ports (alternate device)
2810			  0 = /dev/culu0		Callout device for ttyLU0
2811			  1 = /dev/culu1		Callout device for ttyLU1
2812			  2 = /dev/culu2		Callout device for ttyLU2
2813			  3 = /dev/culu3		Callout device for ttyLU3
2814			  4 = /dev/cufb0		Callout device for ttyFB0
2815			  5 = /dev/cusa0		Callout device for ttySA0
2816			  6 = /dev/cusa1		Callout device for ttySA1
2817			  7 = /dev/cusa2		Callout device for ttySA2
2818			  8 = /dev/cusc0		Callout device for ttySC0
2819			  9 = /dev/cusc1		Callout device for ttySC1
2820			 10 = /dev/cusc2		Callout device for ttySC2
2821			 11 = /dev/cusc3		Callout device for ttySC3
2822			 12 = /dev/cufw0		Callout device for ttyFW0
2823			 13 = /dev/cufw1		Callout device for ttyFW1
2824			 14 = /dev/cufw2		Callout device for ttyFW2
2825			 15 = /dev/cufw3		Callout device for ttyFW3
2826			 16 = /dev/cuam0		Callout device for ttyAM0
2827			    ...
2828			 31 = /dev/cuam15		Callout device for ttyAM15
2829			 32 = /dev/cudb0		Callout device for ttyDB0
2830			    ...
2831			 39 = /dev/cudb7		Callout device for ttyDB7
2832			 40 = /dev/cusg0		Callout device for ttySG0
2833			 41 = /dev/ttycusmx0		Callout device for ttySMX0
2834			 42 = /dev/ttycusmx1		Callout device for ttySMX1
2835			 43 = /dev/ttycusmx2		Callout device for ttySMX2
2836			 46 = /dev/cucpm0		Callout device for ttyCPM0
2837			    ...
2838			 49 = /dev/cucpm5		Callout device for ttyCPM5
2839			 50 = /dev/cuioc40		Callout device for ttyIOC40
2840			    ...
2841			 81 = /dev/cuioc431		Callout device for ttyIOC431
2842			 82 = /dev/cuvr0		Callout device for ttyVR0
2843			 83 = /dev/cuvr1		Callout device for ttyVR1
2844	
2845	206 char	OnStream SC-x0 tape devices
2846			  0 = /dev/osst0		First OnStream SCSI tape, mode 0
2847			  1 = /dev/osst1		Second OnStream SCSI tape, mode 0
2848			    ...
2849			 32 = /dev/osst0l		First OnStream SCSI tape, mode 1
2850			 33 = /dev/osst1l		Second OnStream SCSI tape, mode 1
2851			    ...
2852			 64 = /dev/osst0m		First OnStream SCSI tape, mode 2
2853			 65 = /dev/osst1m		Second OnStream SCSI tape, mode 2
2854			    ...
2855			 96 = /dev/osst0a		First OnStream SCSI tape, mode 3
2856			 97 = /dev/osst1a		Second OnStream SCSI tape, mode 3
2857			    ...
2858			128 = /dev/nosst0		No rewind version of /dev/osst0
2859			129 = /dev/nosst1		No rewind version of /dev/osst1
2860			    ...
2861			160 = /dev/nosst0l		No rewind version of /dev/osst0l
2862			161 = /dev/nosst1l		No rewind version of /dev/osst1l
2863			    ...
2864			192 = /dev/nosst0m		No rewind version of /dev/osst0m
2865			193 = /dev/nosst1m		No rewind version of /dev/osst1m
2866			    ...
2867			224 = /dev/nosst0a		No rewind version of /dev/osst0a
2868			225 = /dev/nosst1a		No rewind version of /dev/osst1a
2869			    ...
2870	
2871			The OnStream SC-x0 SCSI tapes do not support the
2872			standard SCSI SASD command set and therefore need
2873			their own driver "osst". Note that the IDE, USB (and
2874			maybe ParPort) versions may be driven via ide-scsi or
2875			usb-storage SCSI emulation and this osst device and
2876			driver as well.  The ADR-x0 drives are QIC-157
2877			compliant and don't need osst.
2878	
2879	207 char	Compaq ProLiant health feature indicate
2880			  0 = /dev/cpqhealth/cpqw	Redirector interface
2881			  1 = /dev/cpqhealth/crom	EISA CROM
2882			  2 = /dev/cpqhealth/cdt	Data Table
2883			  3 = /dev/cpqhealth/cevt	Event Log
2884			  4 = /dev/cpqhealth/casr	Automatic Server Recovery
2885			  5 = /dev/cpqhealth/cecc	ECC Memory
2886			  6 = /dev/cpqhealth/cmca	Machine Check Architecture
2887			  7 = /dev/cpqhealth/ccsm	Deprecated CDT
2888			  8 = /dev/cpqhealth/cnmi	NMI Handling
2889			  9 = /dev/cpqhealth/css	Sideshow Management
2890			 10 = /dev/cpqhealth/cram	CMOS interface
2891			 11 = /dev/cpqhealth/cpci	PCI IRQ interface
2892	
2893	208 char	User space serial ports
2894			  0 = /dev/ttyU0		First user space serial port
2895			  1 = /dev/ttyU1		Second user space serial port
2896			    ...
2897	
2898	209 char	User space serial ports (alternate devices)
2899			  0 = /dev/cuu0			Callout device for ttyU0
2900			  1 = /dev/cuu1			Callout device for ttyU1
2901			    ...
2902	
2903	210 char	SBE, Inc. sync/async serial card
2904			  0 = /dev/sbei/wxcfg0		Configuration device for board 0
2905			  1 = /dev/sbei/dld0		Download device for board 0
2906			  2 = /dev/sbei/wan00		WAN device, port 0, board 0
2907			  3 = /dev/sbei/wan01		WAN device, port 1, board 0
2908			  4 = /dev/sbei/wan02		WAN device, port 2, board 0
2909			  5 = /dev/sbei/wan03		WAN device, port 3, board 0
2910			  6 = /dev/sbei/wanc00		WAN clone device, port 0, board 0
2911			  7 = /dev/sbei/wanc01		WAN clone device, port 1, board 0
2912			  8 = /dev/sbei/wanc02		WAN clone device, port 2, board 0
2913			  9 = /dev/sbei/wanc03		WAN clone device, port 3, board 0
2914			 10 = /dev/sbei/wxcfg1		Configuration device for board 1
2915			 11 = /dev/sbei/dld1		Download device for board 1
2916			 12 = /dev/sbei/wan10		WAN device, port 0, board 1
2917			 13 = /dev/sbei/wan11		WAN device, port 1, board 1
2918			 14 = /dev/sbei/wan12		WAN device, port 2, board 1
2919			 15 = /dev/sbei/wan13		WAN device, port 3, board 1
2920			 16 = /dev/sbei/wanc10		WAN clone device, port 0, board 1
2921			 17 = /dev/sbei/wanc11		WAN clone device, port 1, board 1
2922			 18 = /dev/sbei/wanc12		WAN clone device, port 2, board 1
2923			 19 = /dev/sbei/wanc13		WAN clone device, port 3, board 1
2924			    ...
2925	
2926			Yes, each board is really spaced 10 (decimal) apart.
2927	
2928	211 char	Addinum CPCI1500 digital I/O card
2929			  0 = /dev/addinum/cpci1500/0	First CPCI1500 card
2930			  1 = /dev/addinum/cpci1500/1	Second CPCI1500 card
2931			    ...
2932	
2933	212 char	LinuxTV.org DVB driver subsystem
2934			  0 = /dev/dvb/adapter0/video0    first video decoder of first card
2935			  1 = /dev/dvb/adapter0/audio0    first audio decoder of first card
2936			  2 = /dev/dvb/adapter0/sec0      (obsolete/unused)
2937			  3 = /dev/dvb/adapter0/frontend0 first frontend device of first card
2938			  4 = /dev/dvb/adapter0/demux0    first demux device of first card
2939			  5 = /dev/dvb/adapter0/dvr0      first digital video recoder device of first card
2940			  6 = /dev/dvb/adapter0/ca0       first common access port of first card
2941			  7 = /dev/dvb/adapter0/net0      first network device of first card
2942			  8 = /dev/dvb/adapter0/osd0      first on-screen-display device of first card
2943			  9 = /dev/dvb/adapter0/video1    second video decoder of first card
2944			    ...
2945			 64 = /dev/dvb/adapter1/video0    first video decoder of second card
2946			    ...
2947			128 = /dev/dvb/adapter2/video0    first video decoder of third card
2948			    ...
2949			196 = /dev/dvb/adapter3/video0    first video decoder of fourth card
2950	
2951	216 char	Bluetooth RFCOMM TTY devices
2952			  0 = /dev/rfcomm0		First Bluetooth RFCOMM TTY device
2953			  1 = /dev/rfcomm1		Second Bluetooth RFCOMM TTY device
2954			    ...
2955	
2956	217 char	Bluetooth RFCOMM TTY devices (alternate devices)
2957			  0 = /dev/curf0		Callout device for rfcomm0
2958			  1 = /dev/curf1		Callout device for rfcomm1
2959			    ...
2960	
2961	218 char	The Logical Company bus Unibus/Qbus adapters
2962			  0 = /dev/logicalco/bci/0	First bus adapter
2963			  1 = /dev/logicalco/bci/1	First bus adapter
2964			    ...
2965	
2966	219 char	The Logical Company DCI-1300 digital I/O card
2967			  0 = /dev/logicalco/dci1300/0	First DCI-1300 card
2968			  1 = /dev/logicalco/dci1300/1	Second DCI-1300 card
2969			    ...
2970	
2971	220 char	Myricom Myrinet "GM" board
2972			  0 = /dev/myricom/gm0		First Myrinet GM board
2973			  1 = /dev/myricom/gmp0		First board "root access"
2974			  2 = /dev/myricom/gm1		Second Myrinet GM board
2975			  3 = /dev/myricom/gmp1		Second board "root access"
2976			    ...
2977	
2978	221 char	VME bus
2979			  0 = /dev/bus/vme/m0		First master image
2980			  1 = /dev/bus/vme/m1		Second master image
2981			  2 = /dev/bus/vme/m2		Third master image
2982			  3 = /dev/bus/vme/m3		Fourth master image
2983			  4 = /dev/bus/vme/s0		First slave image
2984			  5 = /dev/bus/vme/s1		Second slave image
2985			  6 = /dev/bus/vme/s2		Third slave image
2986			  7 = /dev/bus/vme/s3		Fourth slave image
2987			  8 = /dev/bus/vme/ctl		Control
2988	
2989			It is expected that all VME bus drivers will use the
2990			same interface.  For interface documentation see
2991			http://www.vmelinux.org/.
2992	
2993	224 char	A2232 serial card
2994			  0 = /dev/ttyY0		First A2232 port
2995			  1 = /dev/ttyY1		Second A2232 port
2996			    ...
2997	
2998	225 char	A2232 serial card (alternate devices)
2999			  0 = /dev/cuy0			Callout device for ttyY0
3000			  1 = /dev/cuy1			Callout device for ttyY1
3001			    ...
3002	
3003	226 char	Direct Rendering Infrastructure (DRI)
3004			  0 = /dev/dri/card0		First graphics card
3005			  1 = /dev/dri/card1		Second graphics card
3006			    ...
3007	
3008	227 char	IBM 3270 terminal Unix tty access
3009			  1 = /dev/3270/tty1		First 3270 terminal
3010			  2 = /dev/3270/tty2		Seconds 3270 terminal
3011			    ...
3012	
3013	228 char	IBM 3270 terminal block-mode access
3014			  0 = /dev/3270/tub		Controlling interface
3015			  1 = /dev/3270/tub1		First 3270 terminal
3016			  2 = /dev/3270/tub2		Second 3270 terminal
3017			    ...
3018	
3019	229 char	IBM iSeries/pSeries virtual console
3020			  0 = /dev/hvc0			First console port
3021			  1 = /dev/hvc1			Second console port
3022			    ...
3023	
3024	230 char	IBM iSeries virtual tape
3025			  0 = /dev/iseries/vt0		First virtual tape, mode 0
3026			  1 = /dev/iseries/vt1		Second virtual tape, mode 0
3027			    ...
3028			 32 = /dev/iseries/vt0l		First virtual tape, mode 1
3029			 33 = /dev/iseries/vt1l		Second virtual tape, mode 1
3030			    ...
3031			 64 = /dev/iseries/vt0m		First virtual tape, mode 2
3032			 65 = /dev/iseries/vt1m		Second virtual tape, mode 2
3033			    ...
3034			 96 = /dev/iseries/vt0a		First virtual tape, mode 3
3035			 97 = /dev/iseries/vt1a		Second virtual tape, mode 3
3036			      ...
3037			128 = /dev/iseries/nvt0		First virtual tape, mode 0, no rewind
3038			129 = /dev/iseries/nvt1		Second virtual tape, mode 0, no rewind
3039			    ...
3040			160 = /dev/iseries/nvt0l	First virtual tape, mode 1, no rewind
3041			161 = /dev/iseries/nvt1l	Second virtual tape, mode 1, no rewind
3042			    ...
3043			192 = /dev/iseries/nvt0m	First virtual tape, mode 2, no rewind
3044			193 = /dev/iseries/nvt1m	Second virtual tape, mode 2, no rewind
3045			    ...
3046			224 = /dev/iseries/nvt0a	First virtual tape, mode 3, no rewind
3047			225 = /dev/iseries/nvt1a	Second virtual tape, mode 3, no rewind
3048			    ...
3049	
3050			"No rewind" refers to the omission of the default
3051			automatic rewind on device close.  The MTREW or MTOFFL
3052			ioctl()'s can be used to rewind the tape regardless of
3053			the device used to access it.
3054	
3055	231 char	InfiniBand
3056			0 = /dev/infiniband/umad0
3057			1 = /dev/infiniband/umad1
3058			  ...
3059			63 = /dev/infiniband/umad63    63rd InfiniBandMad device
3060			64 = /dev/infiniband/issm0     First InfiniBand IsSM device
3061			65 = /dev/infiniband/issm1     Second InfiniBand IsSM device
3062			  ...
3063			127 = /dev/infiniband/issm63    63rd InfiniBand IsSM device
3064			128 = /dev/infiniband/uverbs0   First InfiniBand verbs device
3065			129 = /dev/infiniband/uverbs1   Second InfiniBand verbs device
3066			  ...
3067			159 = /dev/infiniband/uverbs31  31st InfiniBand verbs device
3068	
3069	232 char	Biometric Devices
3070			0 = /dev/biometric/sensor0/fingerprint	first fingerprint sensor on first device
3071			1 = /dev/biometric/sensor0/iris		first iris sensor on first device
3072			2 = /dev/biometric/sensor0/retina	first retina sensor on first device
3073			3 = /dev/biometric/sensor0/voiceprint	first voiceprint sensor on first device
3074			4 = /dev/biometric/sensor0/facial	first facial sensor on first device
3075			5 = /dev/biometric/sensor0/hand		first hand sensor on first device
3076			  ...
3077			10 = /dev/biometric/sensor1/fingerprint	first fingerprint sensor on second device
3078			  ...
3079			20 = /dev/biometric/sensor2/fingerprint	first fingerprint sensor on third device
3080			  ...
3081	
3082	233 char	PathScale InfiniPath interconnect
3083			0 = /dev/ipath        Primary device for programs (any unit)
3084			1 = /dev/ipath0       Access specifically to unit 0
3085			2 = /dev/ipath1       Access specifically to unit 1
3086			  ...
3087			4 = /dev/ipath3       Access specifically to unit 3
3088			129 = /dev/ipath_sma    Device used by Subnet Management Agent
3089			130 = /dev/ipath_diag   Device used by diagnostics programs
3090	
3091	234-239		UNASSIGNED
3092	
3093	240-254 char	LOCAL/EXPERIMENTAL USE
3094	
3095	240-254 block	LOCAL/EXPERIMENTAL USE
3096			Allocated for local/experimental use.  For devices not
3097			assigned official numbers, these ranges should be
3098			used in order to avoid conflicting with future assignments.
3099	
3100	255 char	RESERVED
3101	
3102	255 block	RESERVED
3103	
3104			This major is reserved to assist the expansion to a
3105			larger number space.  No device nodes with this major
3106			should ever be created on the filesystem.
3107			(This is probably not true anymore, but I'll leave it
3108			for now /Torben)
3109	
3110	---LARGE MAJORS!!!!!---
3111	
3112	256 char	Equinox SST multi-port serial boards
3113			   0 = /dev/ttyEQ0	First serial port on first Equinox SST board
3114			 127 = /dev/ttyEQ127	Last serial port on first Equinox SST board
3115			 128 = /dev/ttyEQ128	First serial port on second Equinox SST board
3116			  ...
3117			1027 = /dev/ttyEQ1027	Last serial port on eighth Equinox SST board
3118	
3119	256 block	Resident Flash Disk Flash Translation Layer
3120			  0 = /dev/rfda		First RFD FTL layer
3121			 16 = /dev/rfdb		Second RFD FTL layer
3122			  ...
3123			240 = /dev/rfdp		16th RFD FTL layer
3124	
3125	257 char	Phoenix Technologies Cryptographic Services Driver
3126			  0 = /dev/ptlsec	Crypto Services Driver
3127	
3128	257 block	SSFDC Flash Translation Layer filesystem
3129			  0 = /dev/ssfdca	First SSFDC layer
3130			  8 = /dev/ssfdcb	Second SSFDC layer
3131			 16 = /dev/ssfdcc	Third SSFDC layer
3132			 24 = /dev/ssfdcd	4th SSFDC layer
3133			 32 = /dev/ssfdce	5th SSFDC layer
3134			 40 = /dev/ssfdcf	6th SSFDC layer
3135			 48 = /dev/ssfdcg	7th SSFDC layer
3136			 56 = /dev/ssfdch	8th SSFDC layer
3137	
3138	258 block	ROM/Flash read-only translation layer
3139			  0 = /dev/blockrom0	First ROM card's translation layer interface
3140			  1 = /dev/blockrom1	Second ROM card's translation layer interface
3141			  ...
3142	
3143	259 block	Block Extended Major
3144			  Used dynamically to hold additional partition minor
3145			  numbers and allow large numbers of partitions per device
3146	
3147	259 char	FPGA configuration interfaces
3148			  0 = /dev/icap0	First Xilinx internal configuration
3149			  1 = /dev/icap1	Second Xilinx internal configuration
3150	
3151	260 char	OSD (Object-based-device) SCSI Device
3152			  0 = /dev/osd0		First OSD Device
3153			  1 = /dev/osd1		Second OSD Device
3154			  ...
3155			  255 = /dev/osd255	256th OSD Device
3156	
3157	 ****	ADDITIONAL /dev DIRECTORY ENTRIES
3158	
3159	This section details additional entries that should or may exist in
3160	the /dev directory.  It is preferred that symbolic links use the same
3161	form (absolute or relative) as is indicated here.  Links are
3162	classified as "hard" or "symbolic" depending on the preferred type of
3163	link; if possible, the indicated type of link should be used.
3164	
3165	
3166		Compulsory links
3167	
3168	These links should exist on all systems:
3169	
3170	/dev/fd		/proc/self/fd	symbolic	File descriptors
3171	/dev/stdin	fd/0		symbolic	stdin file descriptor
3172	/dev/stdout	fd/1		symbolic	stdout file descriptor
3173	/dev/stderr	fd/2		symbolic	stderr file descriptor
3174	/dev/nfsd	socksys		symbolic	Required by iBCS-2
3175	/dev/X0R	null		symbolic	Required by iBCS-2
3176	
3177	Note: /dev/X0R is <letter X>-<digit 0>-<letter R>.
3178	
3179		Recommended links
3180	
3181	It is recommended that these links exist on all systems:
3182	
3183	/dev/core	/proc/kcore	symbolic	Backward compatibility
3184	/dev/ramdisk	ram0		symbolic	Backward compatibility
3185	/dev/ftape	qft0		symbolic	Backward compatibility
3186	/dev/bttv0	video0		symbolic	Backward compatibility
3187	/dev/radio	radio0		symbolic	Backward compatibility
3188	/dev/i2o*	/dev/i2o/*	symbolic	Backward compatibility
3189	/dev/scd?	sr?		hard		Alternate SCSI CD-ROM name
3190	
3191		Locally defined links
3192	
3193	The following links may be established locally to conform to the
3194	configuration of the system.  This is merely a tabulation of existing
3195	practice, and does not constitute a recommendation.  However, if they
3196	exist, they should have the following uses.
3197	
3198	/dev/mouse	mouse port	symbolic	Current mouse device
3199	/dev/tape	tape device	symbolic	Current tape device
3200	/dev/cdrom	CD-ROM device	symbolic	Current CD-ROM device
3201	/dev/cdwriter	CD-writer	symbolic	Current CD-writer device
3202	/dev/scanner	scanner		symbolic	Current scanner device
3203	/dev/modem	modem port	symbolic	Current dialout device
3204	/dev/root	root device	symbolic	Current root filesystem
3205	/dev/swap	swap device	symbolic	Current swap device
3206	
3207	/dev/modem should not be used for a modem which supports dialin as
3208	well as dialout, as it tends to cause lock file problems.  If it
3209	exists, /dev/modem should point to the appropriate primary TTY device
3210	(the use of the alternate callout devices is deprecated).
3211	
3212	For SCSI devices, /dev/tape and /dev/cdrom should point to the
3213	``cooked'' devices (/dev/st* and /dev/sr*, respectively), whereas
3214	/dev/cdwriter and /dev/scanner should point to the appropriate generic
3215	SCSI devices (/dev/sg*).
3216	
3217	/dev/mouse may point to a primary serial TTY device, a hardware mouse
3218	device, or a socket for a mouse driver program (e.g. /dev/gpmdata).
3219	
3220		Sockets and pipes
3221	
3222	Non-transient sockets and named pipes may exist in /dev.  Common entries are:
3223	
3224	/dev/printer	socket		lpd local socket
3225	/dev/log	socket		syslog local socket
3226	/dev/gpmdata	socket		gpm mouse multiplexer
3227	
3228		Mount points
3229	
3230	The following names are reserved for mounting special filesystems
3231	under /dev.  These special filesystems provide kernel interfaces that
3232	cannot be provided with standard device nodes.
3233	
3234	/dev/pts	devpts		PTY slave filesystem
3235	/dev/shm	tmpfs		POSIX shared memory maintenance access
3236	
3237	 ****	TERMINAL DEVICES
3238	
3239	Terminal, or TTY devices are a special class of character devices.  A
3240	terminal device is any device that could act as a controlling terminal
3241	for a session; this includes virtual consoles, serial ports, and
3242	pseudoterminals (PTYs).
3243	
3244	All terminal devices share a common set of capabilities known as line
3245	disciplines; these include the common terminal line discipline as well
3246	as SLIP and PPP modes.
3247	
3248	All terminal devices are named similarly; this section explains the
3249	naming and use of the various types of TTYs.  Note that the naming
3250	conventions include several historical warts; some of these are
3251	Linux-specific, some were inherited from other systems, and some
3252	reflect Linux outgrowing a borrowed convention.
3253	
3254	A hash mark (#) in a device name is used here to indicate a decimal
3255	number without leading zeroes.
3256	
3257		Virtual consoles and the console device
3258	
3259	Virtual consoles are full-screen terminal displays on the system video
3260	monitor.  Virtual consoles are named /dev/tty#, with numbering
3261	starting at /dev/tty1; /dev/tty0 is the current virtual console.
3262	/dev/tty0 is the device that should be used to access the system video
3263	card on those architectures for which the frame buffer devices
3264	(/dev/fb*) are not applicable.	Do not use /dev/console
3265	for this purpose.
3266	
3267	The console device, /dev/console, is the device to which system
3268	messages should be sent, and on which logins should be permitted in
3269	single-user mode.  Starting with Linux 2.1.71, /dev/console is managed
3270	by the kernel; for previous versions it should be a symbolic link to
3271	either /dev/tty0, a specific virtual console such as /dev/tty1, or to
3272	a serial port primary (tty*, not cu*) device, depending on the
3273	configuration of the system.
3274	
3275		Serial ports
3276	
3277	Serial ports are RS-232 serial ports and any device which simulates
3278	one, either in hardware (such as internal modems) or in software (such
3279	as the ISDN driver.)  Under Linux, each serial ports has two device
3280	names, the primary or callin device and the alternate or callout one.
3281	Each kind of device is indicated by a different letter.	 For any
3282	letter X, the names of the devices are /dev/ttyX# and /dev/cux#,
3283	respectively; for historical reasons, /dev/ttyS# and /dev/ttyC#
3284	correspond to /dev/cua# and /dev/cub#.	In the future, it should be
3285	expected that multiple letters will be used; all letters will be upper
3286	case for the "tty" device (e.g. /dev/ttyDP#) and lower case for the
3287	"cu" device (e.g. /dev/cudp#).
3288	
3289	The names /dev/ttyQ# and /dev/cuq# are reserved for local use.
3290	
3291	The alternate devices provide for kernel-based exclusion and somewhat
3292	different defaults than the primary devices.  Their main purpose is to
3293	allow the use of serial ports with programs with no inherent or broken
3294	support for serial ports.  Their use is deprecated, and they may be
3295	removed from a future version of Linux.
3296	
3297	Arbitration of serial ports is provided by the use of lock files with
3298	the names /var/lock/LCK..ttyX#.	 The contents of the lock file should
3299	be the PID of the locking process as an ASCII number.
3300	
3301	It is common practice to install links such as /dev/modem
3302	which point to serial ports.  In order to ensure proper locking in the
3303	presence of these links, it is recommended that software chase
3304	symlinks and lock all possible names; additionally, it is recommended
3305	that a lock file be installed with the corresponding alternate
3306	device.	 In order to avoid deadlocks, it is recommended that the locks
3307	are acquired in the following order, and released in the reverse:
3308	
3309		1. The symbolic link name, if any (/var/lock/LCK..modem)
3310		2. The "tty" name (/var/lock/LCK..ttyS2)
3311		3. The alternate device name (/var/lock/LCK..cua2)
3312	
3313	In the case of nested symbolic links, the lock files should be
3314	installed in the order the symlinks are resolved.
3315	
3316	Under no circumstances should an application hold a lock while waiting
3317	for another to be released.  In addition, applications which attempt
3318	to create lock files for the corresponding alternate device names
3319	should take into account the possibility of being used on a non-serial
3320	port TTY, for which no alternate device would exist.
3321	
3322		Pseudoterminals (PTYs)
3323	
3324	Pseudoterminals, or PTYs, are used to create login sessions or provide
3325	other capabilities requiring a TTY line discipline (including SLIP or
3326	PPP capability) to arbitrary data-generation processes.	 Each PTY has
3327	a master side, named /dev/pty[p-za-e][0-9a-f], and a slave side, named
3328	/dev/tty[p-za-e][0-9a-f].  The kernel arbitrates the use of PTYs by
3329	allowing each master side to be opened only once.
3330	
3331	Once the master side has been opened, the corresponding slave device
3332	can be used in the same manner as any TTY device.  The master and
3333	slave devices are connected by the kernel, generating the equivalent
3334	of a bidirectional pipe with TTY capabilities.
3335	
3336	Recent versions of the Linux kernels and GNU libc contain support for
3337	the System V/Unix98 naming scheme for PTYs, which assigns a common
3338	device, /dev/ptmx, to all the masters (opening it will automatically
3339	give you a previously unassigned PTY) and a subdirectory, /dev/pts,
3340	for the slaves; the slaves are named with decimal integers (/dev/pts/#
3341	in our notation).  This removes the problem of exhausting the
3342	namespace and enables the kernel to automatically create the device
3343	nodes for the slaves on demand using the "devpts" filesystem.
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