On Tue, 2006-05-30 at 20:13 -0500, Mikkel L. Ellertson wrote: > David McCormick wrote: > > I did find the problem and correct it, I had > > added an IDE drive to a SCSI system and as soon as I removed it > > everything worked as it has in the past 13 years that I have been using > > Linux. > > > > Thank you for your help. > > > > Dave > > > I am more used to seeing this problem with LILO then Grub. Depending > on your BIOS and SCSI controller, the drive mapping can change when > you add an IDE drive to a SCSI system. LILO used to always assume > that BIOS device 80 was the IDE drive. (It is supposed to determine > that at boot time now.) So if you booted from the SCSI drive, you > had to tell LILO that the SCSI drive was BIOS 80. I have not used > Grub on a SCSI/IDE mix, but I am sure there is a way to tell it to > double check the drive mapping when you add an IDE drive. I think grub makes the same assumption. Use the device.map file to get grub to understand the BIOS ordering, e.g.: # cat /boot/grub/device.map (fd0) /dev/fd0 (hd0) /dev/sda (hd1) /dev/sdb (hd2) /dev/hdc Paul.