My two hard drives were not being recognised when booting up. "Primary hard drive failure" "Secondary hard drive failure" - very sickening. Fiddled about inside, IDE cables, jumpers and have managed to get them operating again. But when I start up I receive a blue Stop screen saying Unmountable Boot Volume - I have formatted and reinstalled XP (on my primary HD, Western Dig 20Gb), my programs and files are on an IBM 120Gb. To get around this problem I have to boot from XP cd and go into the repair console and type 'fixboot' to fix the boot record. When I restart I can boot into XP normally. But the next day it happens again - I can restart the computer during the course of the day without getting it, but I get it without fail first thing everyday. Windows Update has fully updated my computer I have found this on the M$ site http://support.microsoft.com/default.aspx?scid=KB;en-us;q297185 The thing is that the IDE cables have been working fine before - the link says "If your computer uses a UDMA hard disk controller, use the following procedures: Replace the 40-wire cable with an 80-wire UDMA cable. " I'm not sure what IDE cables I am using and whether I need to use UDMA ones So I'm stuck - have to boot from cd everyday, and I can't figure it out - my last saviour "a format will fix it" is sadly not applicable here <EDIT> I should point out that I was receiving the stop screen before the problems with the hard drives. (Although they both cropped up on the same day). Also, there was a botched attempt at installing Win XP MCE on a separate partition beforehand - but I'm not sure this should be a problem due to the formatting.