CD Reader Blues - RH8

[Terry Polzin]

On Wednesday September 15 2004 05:36, Bob Hartung wrote:
> Hi all,
>    I have a new problem with a CD reader.  This is on an IBM xSeries
> 232.  The CD has been replaced and passes all of the IBM built in tests
> for linear and random reads plus the mechanical tests of door open/close
> etc.
>    I have made no modifications to the machine in the last two months.
> Its' only purpose is to act as a Samba server.
>
> When trying to mount a CD I receive the following error:
>
> [root at rgeserv1 root]# mount /mnt/cdrom
> mount: wrong fs type, bad option, bad superblock on /dev/cdrom,
>         or too many mounted file systems
>         (could this be the IDE device where you in fact use
>         ide-scsi so that sr0 or sda or so is needed?)
>
>
> When I look at dmesg I get:
> [root at rgeserv1 root]# dmesg | grep hda
>      ide0: BM-DMA at 0x0840-0x0847, BIOS settings: hda:DMA, hdb:DMA
> hda: LTN486S, ATAPI CD/DVD-ROM drive
> ide-scsi: hda: unsupported command in request queue (0)
> end_request: I/O error, dev 03:00 (hda), sector 0
>
>
> The fstab entry looks okay to my beginner eyes:
> /dev/cdrom    /mnt/cdrom   iso9660   noauto,owner,kudzu  0 0
>
> Where can I begin to look for the problem. I do not understand where the
> line:
>  ide-scsi: hda: unsupported command in request queue (0)
>
> comes from.
Do an lsmod, is the ide-scsi module loaded?  If so get rid of it and try 
again, also check and see if ide-scsi is on the boot line in the grub.conf  
get rid of that as well.   Did you replace a CDR or CDRW drive with the one 
currently installed?