Hi Thanks to those who helped on the reflector. It would appear the RAID controllers didn't like the installation of Lilo. fdisk /mbr wouldn't work because the controllers mixed up the drive identifications. Somehow, the installation of Lilo caused the Windows disk to disappear. My techy had to put the cables on the ordinary (Non RAID) controllers then he could clear the mbr. He then put the cables back to how they were and all works fine. The retailers of my board suggest that I need a new revision of my BIOS. It'll be a little while before I'm back on the reflector while I'm sorting out what to do. Once again thanks. Gena Gena Announcing Blindness Advocacy and Self-Help BASHOnline www.bashonline.org Personal Pages: http://www.gena-j.net Mobile phone 07951 196268