Thanks, i think the hdd is screwed. I used a mayes xbox to reinstate my original eeprom and am using my xbox oem drive with no problems. Even works with new eeprom locked! I think that something has happened to my hdd at some point?

Wont do anything on any xbox! At least my xbox is not stuffed! I'm just up for another hdd. Might have to go for a big one

If anyone has any more thoughts on how to unlock the drive they are more than welcome cos i want to at least get all my savegames back. (Forgot to back it all off to my pc!)