[linux-help] Re: Can't mount cdrom

[Jeff Vian <jvian10@xxxxxxxxxxx>]

bruce wrote:
> I installed RH7.2 on a rather minimal system (P133, 32MB memory, 1.2GBdisk) 
> and the install went pretty well and the cdrom worked perfectly during the 
> install. but when I booted up, I couldn't mount the cdrom.  
> 
> [root@bertha]# mount  /mnt/cdrom
> mount: /dev/cdrom is not a valid block device

make sure the module ide-cd is loaded
I have the same problem when I let the cdrom be configured by ide-scsi 
as it is when a cd-rw device is installed. In that case /dev/cdrom 
should point to /dev/scd? (0 or 1 depending wheter it is master or slave)
If you have a cdr or cdrw installed this may be the problem.

> 
> /dev/cdrom is a link to /dev/hdc and /hdc is not listed in /proc/partitions.  
> /etc/fstab looks normal.
> 
> [root@bertha]# cat  /etc/fstab
> ....(other stuff) ....
> /dev/cdrom     /mnt/cdrom        iso9660 noauto,owner,kudzu,ro 0 0
> 
> [bruce@bertha]$ ls /dev/cdrom -l
> lrwxrwxrwx    1 root     root            8 Jan 10 13:26 /dev/cdrom -> /dev/hdc
> 
> hdc not being listed in /proc/partitions may be the root of my problem, but 
> can it be fixed?
> 

Is the cdrom the master on the secondary ide controller?
   hda/hdb -- master/slave on primary controller
   hdc/hdd -- master/slave on secondary controller


I usually use the cd as slave even if a master is not present because 
sometimes the cd as master has problems. And a cd cannot be master to a 
hard drive as slave.

Try switching it and let kudzu remove the old definition and add the new 
one then see if it will mount.



> A reinstall of RH7.2 came out the same.
> 
> iso9660 is listed in /etc/filesystems.
> 
> I can't see anything in man mount that might pertain.
> 
> any help appreciated.
> bruce
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