USB CD-ROM detection

[Matt Zimmerman]

For some reason, on the latest live CD (and only the latest), I can't load
d-i from my USB CD-ROM drive.  The cause seems to be that /dev/cdroms/cdrom1
is missing (/dev/cdroms/cdrom0, the built-in IDE one, is present).
The device node for the drive itself (/dev/scsi/.../cd) is present.
udevstart fixes the problem (sound familiar?).  This happens consistently.

Has anyone else seen this behaviour?  I assume it affects the install CD as
well.

-- 
 - mdz