>
> I was playing mp3s from a CD I burned myself, and all of a sudden, I started
> getting:
> ...
>
> Seeing MEDIUM ERROR, does this suggest the CD is messed up? I know I
> could try another CD, but I'd like to know if some of the SCSI-gurus out
> there could decipher the SCSI protocol here and tell me if it just looked
> like bogus disc or if there was something maybe wrong with my drive.
Alright, a little more information. It seems this problem only happens
with CDs I burned myself. :( So I guess my drive is probably okay. This
is the syslog output of three CDs I made when I tried to
"dd if=/dev/scd0 of=/dev/null".
RedHat 5.2 Intel (made from an ISO image I found on the net)
Jan 26 10:04:59 xenon kernel: sr0: disc change detected.
Jan 26 10:04:59 xenon kernel: Uniform CDROM driver Revision: 2.52
Jan 26 10:10:21 xenon kernel: sr0: CD-ROM error: Current error sr0b:00: sense key
Illegal Request
Jan 26 10:10:21 xenon kernel: Additional sense indicates Illegal mode for this
track
Jan 26 10:10:21 xenon kernel: command was: Read (10) 00 00 03 d5 a0 00 00 07 00
Jan 26 10:10:25 xenon kernel: scsi1: MEDIUM ERROR on channel 0, id 5, lun 0, CDB:
Read (6) 03 d5 a6 01 00
Jan 26 10:10:25 xenon kernel: Current error sr0b:00: sense key Medium Error
Jan 26 10:10:25 xenon kernel: Additional sense indicates Unrecovered read error
Jan 26 10:10:25 xenon kernel: CD-ROM I/O error: dev 0b:00, sector 1005208
CCITT Test Suite Images (a copy of this CD, guess it's ISO w/o extensions)
Jan 26 10:12:43 xenon kernel: sr0: disc change detected.
Jan 26 10:16:43 xenon kernel: sr0: CD-ROM error: Current error sr0b:00: sense key
Illegal Request
Jan 26 10:16:43 xenon kernel: Additional sense indicates Illegal mode for this track
Jan 26 10:16:43 xenon kernel: command was: Read (10) 00 00 03 34 90 00 00 0f 00
Jan 26 10:16:46 xenon kernel: sr0: CD-ROM error: Current error sr0b:00: sense key
Illegal Request
Jan 26 10:16:46 xenon kernel: Additional sense indicates Illegal mode for this t
rack
Jan 26 10:16:46 xenon kernel: command was: Read (6) 03 34 9e 01 00
Jan 26 10:16:46 xenon kernel: CD-ROM I/O error: dev 0b:00, sector 840312
MP3 CD (a collection of MP3s done on a NT box -- Joliet format):
Jan 26 10:40:02 xenon kernel: sr0: disc change detected.
Jan 26 10:46:07 xenon kernel: scsi1: MEDIUM ERROR on channel 0, id 5, lun 0, CDB:
Read (10) 00 00 04 eb 50 00 00 02 00
Jan 26 10:46:07 xenon kernel: Current error sr0b:00: sense key Medium Error
Jan 26 10:46:07 xenon kernel: Additional sense indicates Unrecovered read error
Jan 26 10:46:07 xenon kernel: CD-ROM I/O error: dev 0b:00, sector 1289536
Jan 26 10:46:10 xenon kernel: sr0: CD-ROM error: Current error sr0b:00: sense key
Illegal Request
Jan 26 10:46:10 xenon kernel: Additional sense indicates Illegal mode for this track
Jan 26 10:46:10 xenon kernel: command was: Read (10) 00 00 04 eb 51 00 00 01 00
Jan 26 10:46:14 xenon kernel: sr0: CD-ROM error: Current error sr0b:00: sense key
Illegal Request
Jan 26 10:46:14 xenon kernel: Additional sense indicates Illegal mode for this track
Jan 26 10:46:14 xenon kernel: command was: Read (6) 04 eb 51 01 00
Jan 26 10:46:14 xenon kernel: CD-ROM I/O error: dev 0b:00, sector 1289540
Some of the stuff is the same, some of the sutff is not. All seem to fail
on reads (at different points), and some suggest MEDIUM ERRORRs while others
simply note "Illegal mode for this track".
Please, can someone explain what is happening, so that I may figure how
to do this correctly?
(Incidentally, I have installed Linux from the RH CD I made, I have used
the CCITT images without problem, but when I read from the MP3 CD I made,
I get SCSI bus resets as per my previous mail.)
Brendan Miller
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