/dev/cdrom : can't read superblock

[Daniel Gimpelevich]

Have you tried 'eject -t /dev/hdb' at all?  -DG
-- 
"No gnu's is good gnu's."   --Gary Gnu, "The Great Space Coaster"

> From: Charles Trois <charles.trois@wanadoo.fr>
> Reply-To: yellowdog-general@lists.terrasoftsolutions.com
> Date: Sat, 04 Oct 2003 13:19:52 +0200
> To: <yellowdog-general@lists.terrasoftsolutions.com>
> Subject: /dev/cdrom :  can't read superblock
> 
> 
> Here is my problem: the cdrom drive of my LCD iMac used to work perfectly,
> but it doesn't any more.
> 
> What happens is that I am unable to open it:
> 
> [root@sirrah mnt]# eject
> eject: unable to open `/dev/cdrom'
> 
> Seeing that the device was not mounted, I tried to do it:
> 
> [root@sirrah mnt]# mount /dev/cdrom /mnt/cdrom
> mount: /dev/cdrom: can't read superblock
> 
> I also tried this test, which failed:
> 
> [root@sirrah mnt]# cat /dev/cdrom | od | more
> cat: /dev/cdrom: Input/output error
> 0000000
> 
> The kernel is 2.4.22 and includes all the necessary support; moreover, it is
> aware of the device:
> 
> hdb: HL-DT-ST RW/DVD GCC-4120B, ATAPI CD/DVD-ROM drive
> 
> The device is listed on /etc/fstab.
> 
> I would add that the trouble does not depend on whether there is a disc in
> the drive or not, and that this works normally under MacOS.
> 
> The basic question seems to be that of the "superblock": where is it, what
> is in it, why could it not be read?
> 
> I have made a Google search on the Web, I have read the various howtos and
> the doc files in the source directory, but I have found nothing quite to the
> point.
> 
> Would someone have a better idea?
> 
> Thanks in advance.
> 
> Charles
> 
> 
> 
> 
>