[CLUE-Tech] Can't mount cds

[Michael Robbert]

Don,
Sorry that we couldn't figure out what was wrong with RH9 and your 
docking station. That is a little strange that it didn't just work.
Anyways, this one looks simple enough. I was able to reproduce your 
problem on my RH9 installation. The problem is the device name you're 
using. As you see in dmesg your CD-ROM is emulating SCSI, but /dev/hdb 
is an IDE device. You need to access the emulated SCSI device instead.
Take a look at /etc/fstab and you should see an entry for your CD-ROM 
drive. If so you should be able to just use:
mount /dev/cdrom  --or-- mount /mnt/cdrom
The rest will be picked up from your /etc/fstab.  You can look at your 
/dev/cdrom device file and probably see that it is a link to a SCSI
device mine looks like this:

root]# ll /dev/cdrom
lrwxrwxrwx  1 root  root   9 Apr  4 17:56 /dev/cdrom -> /dev/scd0

Let us know if that doesn't work.

Don Collier wrote:
> Hello all.  I seem to be having a bit of a problem.  I just reinstalled RH
> 8 back on to my laptop after trying RH 9 for a while (It seemed fine, but
> didn't work with my docking station).  My cdrom is recognized but I am not
> able to mount anything.
> 
> dmesg shows:
> 
> SCSI subsystem driver Revision: 1.00
> hdb: attached ide-scsi driver.
> scsi0 : SCSI host adapter emulation for IDE ATAPI devices
>   Vendor: TOSHIBA   Model: CDRW/DVD SDR2102  Rev: 1D13
>   Type:   CD-ROM                             ANSI SCSI revision: 02
> 
> So I know that the drive is recognized.  But when I try to mount a cd, I
> get the following error:
> 
> mount: wrong fs type, bad option, bad superblock on /dev/hdb,
>        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?)
> 
> The command used was:
> 
> mount -t iso9660 /dev/hdb /mnt/cdrom/
> 
> The log shows:
> 
> ide-scsi: hdb: unsupported command in request queue (0)
> end_request: I/O error, dev 03:40 (hdb), sector 0
> FAT: unable to read boot sector
> 
> I have tried using several different cds but all give the same error.  Has
> anyone seen this before?
> 
> I am running RedHat 8 on a Dell Latitude C840 with kernel version
> 2.4.20-18.8.  Thanks a bunch.
> 
> _________________________
> Don Collier
> dcollier at collierclan.com
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-- 
Michael "Murph" Robbert
System Administrator for Math/CS
Colorado School of Mines, Golden, CO  80401-1887
Office: SH221
Office phone: 303-273-3786
Pager: 303-461-6543 or Text messages: murph_pager at bigfoot.com
Email: mrobbert at mines.edu