problem mounting CD-ROM

[RandyRiegel]

I'm trying to mount a CD-Rom in RH Linux 9 and getting the following error...

hdc: packet command error: status=0x51 {DriveReady SeekComplete Error }
hdc: request sense failure: status=0x50 { DriveReady SeekComplete Error }

these error keep happening over and over until finally it doesn't mount.

I use the following command to mount the disk.

mount -t iso9660 /dev/hdc /mnt

Anybody know what's wrong? It is an Toshiba 24x ATAPI CD-Rom Drive. It's not the CD, it happens on other cd's also. I can't get any cds to mount.

Thanks
Randy

 

[flugh]

I found this post on a Debian list. It may be of some use. The gist of the fix was:
[tt]

http://lists.debian.org/debian-user/1999/debian-user-199911/msg01210.html

It turns out that the CD-ROM was going to sleep and not waking up properly. hdparm -S 0 /dev/cdrom fixed the problem.
[/tt]
Try giving that a shot.

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JBR

 

[iolair]

Are you sure the name of the device is hdc? In Redhat, that's usually a hard disk, not a cd-rom drive. Try /dev/cda or even /dev/cdrom.

Iolair MacWalter

 

[RhythmAce]

I have a line like this in my /etc/fstab:

/dev/cdrom /mnt/cdrom udf,iso9660 noauto,owner,kudzu,ro 0 0

 

[pansophic]

/dev/cda and /dev/cdrom are normally symbolic links to the actual IDE or SCSI device. The IDE devices are /dev/hd and the SCSIs are /dev/sd.

The symbolic links are created at boot so that they point to the current device, so any of the above should point to the CDROM.

I noticed that you were trying to mount the CDROM to /mnt. Normally it is mounted at /mnt/cdrom or some other directory. /mnt normally has directories for each of your removable devices.


pansophic

 

[flugh]

/dev/hdc isn't a 'hard disk', but the master device on the secondary IDE controller. It could be a hard disk, a cdrom, or whatever else plugs in to an IDE controller.

The point wasn't the exact, specific device name, but more the 'hdparm -S 0' being the solution to a similar problem. It may not be the verbatim solution required this time around, but maybe a push in the right direction

Also, is it possible it's not in iso9660 format? Could the CD(s) be in UDF or something? I have an old laptop (P166MMX!) that refuses to read CD-RW media, and will only boot from a CD-R if it's burned with the disc-at-once option. Try doing scsi-emulation. At boot, pass 'hdc=ide-scsi' to the kernel. Or if the distribution has already done that for you, try removing it and using the ide driver instead (will break CD-burning capability).

If that fails to get something going, trying kicking it.

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JBR