Comment 3 for bug 196063

That only makes the type of the CD drive available in the uevent environment and udevdb, the only use in the default rules is assigning the cdrom group -- not relevant in the initrd (or the real system initramfs)

For various reasons (mostly because devices.txt tells us to), we rename all SCSI CD-ROM devices from sr[0-9]* to scd%n (ie. sr0 becomes scd0, sr1 becomes scd1) -- so it should not be possible for any sr[0-9]* devices to exist in the LiveCD initrd; casper shouldn't check for them?

(Note if it's checking under sysfs that's ok, the kernel node name is still sr0, but it has to remember to translate that to scd0)

In the full system, we add sr0 compatibility symlinks (60-symlinks.rules) -- adding this to the casper initrd might help? (or just fixing casper <g>)