Hi Trackrat..before I start,I wrote on anothe4r board that I really like your song.."Back at You" I think it was called. Very cool tune..very Beatlish. Excellent recording..great!! OK, I have placed the jumper on master not slave. These are (2) 60 gig IBM deskstar DRIVES. They both do the same thing. I have not ever had this problem before. As I said what is weird is if I dismount the drive and reinstall it, it will usually be ok! Maybe it is an IBM issue. These hard drives are hard because there are so many choices to jumper,it will have 15 or 16 head??? on one half of the drive and other side has things like 32 gig. This wont make sense maybe. It seems that if it will install ok after 2 or 3 trys it would not be the jumper in the wrong place...right??