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| author | Max Nikulin <manikulin@gmail.com> | 2025-12-16 21:17:13 +0700 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2025-12-22 14:56:09 -0700 |
| commit | 5188f6bd408f937d81c0c37eb59ddc1035cd912c (patch) | |
| tree | 7cfc2dbceb90d63c23bee39f8e352a25ca9f3423 | |
| parent | d07e0857dcb647792a939a769fc73c20de20c28a (diff) | |
| download | linux-next-5188f6bd408f937d81c0c37eb59ddc1035cd912c.tar.gz linux-next-5188f6bd408f937d81c0c37eb59ddc1035cd912c.zip | |
docs: admin: devices: /dev/sr<N> for SCSI CD-ROM
Don't claim that /dev/sr<N> device names for SCSI CD-ROM drives are
deprecated and don't recommend /dev/scd<N> alternate names for them.
/dev/scd<N> device names for SCSI CD-ROM drives are not in use for more
than a decade, see commit [1] that was a part of udev release 174.
Earlier, related rules were volatile, sometimes /dev/scd<N> were syminks
to /dev/sr<N>, sometimes vice versa.
Recognizing of root=/dev/scd<N> kernel command line argument was removed
in kernel 2.5.45 [2].
In the docs /dev/scd<N> became recommended names in 2.6.9 [3].
Mention of these names appeared much earlier in 1.3.22 [4].
[1] https://git.kernel.org/pub/scm/linux/hotplug/udev.git/commit/?id=d132be4d58
2011-08-12 14:05:19 +0200 Kay Sievers.
rules: remove legacy rules for cdrom and usb printer
[2] https://git.kernel.org/pub/scm/linux/kernel/git/history/history.git/commit/init?h=v2.5.45&id=51924607bd
2002-10-29 00:47:58 -0800 Alexander Viro.
[PATCH] removal of root_dev_names[]
[3] https://git.kernel.org/pub/scm/linux/kernel/git/history/history.git/diff/Documentation/devices.txt?h=v2.6.9-rc4&id=a74e11ffeda
2004-03-16 15:09:38 -0800 Andrew Morton:
[PATCH] devices.txt: typos and removal of dead devices
[4] https://git.kernel.org/pub/scm/linux/kernel/git/history/history.git/tree/Documentation/devices.txt?h=v2.6.9-rc4&id=8f0ec1f9369
1995-09-01 Linus Torvalds: Import 1.3.22
Signed-off-by: Max Nikulin <manikulin@gmail.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <f0a3e0aa-e4f9-41d3-8931-57837831d136@gmail.com>
| -rw-r--r-- | Documentation/admin-guide/devices.rst | 5 | ||||
| -rw-r--r-- | Documentation/admin-guide/devices.txt | 6 |
2 files changed, 7 insertions, 4 deletions
diff --git a/Documentation/admin-guide/devices.rst b/Documentation/admin-guide/devices.rst index e3776d77374b..0dc8c5b98e30 100644 --- a/Documentation/admin-guide/devices.rst +++ b/Documentation/admin-guide/devices.rst @@ -97,9 +97,12 @@ It is recommended that these links exist on all systems: /dev/bttv0 video0 symbolic Backward compatibility /dev/radio radio0 symbolic Backward compatibility /dev/i2o* /dev/i2o/* symbolic Backward compatibility -/dev/scd? sr? hard Alternate SCSI CD-ROM name =============== =============== =============== =============================== +Suggested earlier ``/dev/scd?`` alternative names for ``/dev/sr?`` +CD-ROM and other optical drives (using SCSI commands) were removed +in ``udev`` version 174 that was released in 2011. + Locally defined links +++++++++++++++++++++ diff --git a/Documentation/admin-guide/devices.txt b/Documentation/admin-guide/devices.txt index 94c98be1329a..c480f230aa4a 100644 --- a/Documentation/admin-guide/devices.txt +++ b/Documentation/admin-guide/devices.txt @@ -389,11 +389,11 @@ ... 11 block SCSI CD-ROM devices - 0 = /dev/scd0 First SCSI CD-ROM - 1 = /dev/scd1 Second SCSI CD-ROM + 0 = /dev/sr0 First SCSI CD-ROM + 1 = /dev/sr1 Second SCSI CD-ROM ... - The prefix /dev/sr (instead of /dev/scd) has been deprecated. + In the past the prefix /dev/scd (instead of /dev/sr) was used and even recommended. 12 char QIC-02 tape 2 = /dev/ntpqic11 QIC-11, no rewind-on-close |