[lfs-support] LFS 7.2 missing file 75-cd-aliases-generator.rules

Bruce Dubbs bruce.dubbs at gmail.com
Mon Sep 10 18:20:38 PDT 2012

Lewis Pike wrote:
> On Mon, Sep 10, 2012 at 03:36:50PM -0500, Bruce Dubbs wrote:
>> You are right.  That section needs to be updated.
>> Look in /dev/disk/by-id/.  You should see a cd or dvd device.  In my
>> case, I have:
>> disk/by-id/ata-PLDS_DVD+_-RW_DH-16A6S -> ../../sr0
>> If I do udevadm test /sys/block/sr0, I see
>> LINK 'cdrom' /usr/libexec/udev/rules.d/60-cdrom_id.rules:18
>> does that not work for you?
> In my case I have:
> /dev/disk/by-id/ata-TSSTcorp_CD-RW_DVD-ROM_TS-H492C -> ../../sr0
> The output of udevadm test /sys/block/sr0 includes the line
> LINK 'cdrom' /lib/udev/rules.d/60-cdrom_id.rules:18
> I have yet to complete this LFS build and boot the system, but the
> above output suggests that /dev/cdrom will be symlinked directly to
> ./sr0 by udev.  There is nothing to suggest that /dev/dvd will be
> similarly symlinked to ./sr0, however.
> Admittedly, my knowledge of udev configuration is sketchy.  As I only
> have a single optical drive and it is rarely used, I will simply carry
> on with the build.  I will return to section 7.5 once it has been
> revised.

You can always create your own rule in /etc/udev/rules.d, say,

echo 'SUBSYSTEM=="block", KERNEL=="sr0", SYMLINK+="dvd"' >

   -- Bruce

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