qprfact

Right! I'm with you now!

APK - does that mean you solved it? If so, how?!!

Thanks! For now, I've rolled back to SP1 (System Restore is a wonderful thing!) Presumably, seeing as I have disabled Messenger, use Firefox with all Pop-Ups blocked, and have F-Secure Anti Virus and Firewall, there isn't that much more (if anything) I would get from SP2 anyway is there?

Thanks for your reply. It is a basic disk. I was thinking if all else fails then I would try what you suggested and format it and start from scratch. I jsut think it very strange that something that will work in about 10 minutes time if I roll back to SP1 won't work now!!!!

First post on this board! I've seen one very similar to mine, but not quite the same: I have a SP0802N hard drive which I have been running as a secondary hard drive under XP Pro with no problems since earlier this year. When I install SP2 it no longer appears. It is in Device Manager, but within Disk Management it shows as Offline. I cannot reactivate it - in System Event Viewer I get the messages "Internal Error - The disk group contains no valid configuration copies (C10000B6)" and "Disk group ComputerDg0: Errors in some configuration copies: Disk Harddisk1, copy 1: Block 256: Invalid magic number in the configuration copy". I could probably convert it to a Basic Disk but would then lose all my data (30 odd Gb worth!). It's a Dynamic Disk on NTFS. If I do a System Restore to the point before installing SP2 it appears again! What can I do to get it back please?!!!!