2006/5/29, Johnny Hughes <mailing-lists at hughesjr.com>: > > 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 > prompt: > > 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: > > https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=114690 > > (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. Thanks for answer Johnny. It was exactly problem described above. I have reinstalled grub using rescue evironment. Thanks. -- _________________________________________________________________ D o m i n i k S k ł a d a n o w s k i