[CentOS] Problem after last update

Mon May 29 13:58:55 UTC 2006
Johnny Hughes <mailing-lists at hughesjr.com>

On Mon, 2006-05-29 at 13:02 +0200, Dominik Składanowski wrote:
> Hello list.
> Since morning I have an emergency. After last kernel update one of my
> servers didn't start. On display I see only "GRUB" :(
> I have 2 more servers based on CentOS too, but after the same update
> this servers works.
> All servers have 2 HDs and works as software mirror.
> I have started damaged machine using Knoppix and I can see partitions
> and data on both disks. Of course I have made a backup.
> Anybody has the same problem? It can be hardware problem - HD diode
> light all the time. Or maybe something went wrong during update?

It is very strange that grub (which was already installed and working)
would go bad during an upgrade.

I would boot from a CentOS-4.3 CD-1 and do this command at the isolinux

linux rescue

If it mounts the install at /mnt/sysimage ... do this:

chroot /mnt/sysimage

Then I would follow this guide to make sure that grub is installed on
both hard drives and try rebooting:


(comment #7 should make you work ... assuming you have a software mirror
using sda/sdb or hda/hdb)

You may need to look at the file /boot/grub/Device.map to insure all the
drives are listed properly.

Johnny Hughes
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 189 bytes
Desc: This is a digitally signed message part
URL: <http://lists.centos.org/pipermail/centos/attachments/20060529/ef9f8fd0/attachment-0005.sig>