CD drive not detected

[devils casper]

post the output of 'dmesg | tail'.
try this too

mount /dev/hda

[LAF]

Here's the dmesg command:

root@Knoppix:/media/cdrom# dmesg | tail
hda: command error: status=0x51 { DriveReady SeekComplete Error }
hda: command error: error=0x54 { AbortedCommand LastFailedSense=0x05 }
ide: failed opcode was: unknown
ATAPI device hda:
  Error: Illegal request -- (Sense key=0x05)
  Illegal mode for this track or incompatible medium -- (asc=0x64, ascq=0x00)
  The failed "Read 10" packet command was:
  "28 00 00 00 00 10 00 00 01 00 00 00 00 00 00 00 "
end_request: I/O error, dev hda, sector 64
isofs_fill_super: bread failed, dev=hda, iso_blknum=16, block=16

mount /dev/hda:

root@Knoppix:/media/cdrom# mount /dev/hda
mount: can't find /dev/hda in /etc/fstab or /etc/mtab

Thanks.

[devils casper]

those errors typically indicate damaged media. Have you tried different CD's?

[LAF]

Yep,

Still the same thing:

root@Knoppix:/dev# dmesg | tail
hda: command error: status=0x51 { DriveReady SeekComplete Error }
hda: command error: error=0x54 { AbortedCommand LastFailedSense=0x05 }
ide: failed opcode was: unknown
ATAPI device hda:
Error: Illegal request -- (Sense key=0x05)
Illegal mode for this track or incompatible medium -- (asc=0x64, ascq=0x00)
The failed "Read 10" packet command was:
"28 00 00 00 00 10 00 00 01 00 00 00 00 00 00 00 "
end_request: I/O error, dev hda, sector 64
isofs_fill_super: bread failed, dev=hda, iso_blknum=16, block=16

[LAF]

Could it be something I did wrong when I installed Knoppix 5.1 on my USB key ?

[sumeshgupta63]

You do not give any clue what hardware you have. I had that problem (and suspend/hibernate issue) on an old Dell Inspiron 8200 laptop. It had a hot swap drive bay that had a DVD drive in it. But apparently because it could be hot swapped, Linux kept polling for a floppy drive, resulting in log errors attempting to read fd0, lack of auto mounting USB or CD/DVD's, and failed to suspend or hibernate because it could not put udisks-deamon to sleep, which kept polling for the non-existing floppy.

So if you have no floppy and are getting any fd0 errors in dmesg or /var/log/messages similar to "end_request: I/O error, dev fd0, sector 0", either disable the floppy in your BIOS, or if that does not work:

Add following to /etc/modprobe.d/blacklist.conf (use sudo or gksu to run your editor):

blacklist floppy

Then do: sudo update-initramfs -u

Then reboot and see if USB and other removable media auto mounts when inserted.

Note that other partitions on internal drives are not auto mounted unless you make proper mount points (usually in /media unless you want it mounted elsewhere) and entries in /etc/fstab (preferably using UUID). Although, they will mount if you have permission and select them in Places.

[oz]

Hello and welcome!

This thread is over 4 years old... so locking it down.