I have followed Craig White's advice to use the F8-rescue disk and grub-install /dev/sda - and it works! I have put my SCSI disk back in, rebooted, and all works now! Thanks to all who have responded. Now I have a different problem, which I will post as a seperate posting. Kind regards! Dan No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.16.13/1169 - Release Date: 12/3/2007 10:56 PM