most drive makers have some sort of 'low level format' utility, which isn't a true low level format, it just writes 1's and 0's to the drive from start to finish and leaves them as 0's, which almost always gets rid of any troublesome partition issues (it worked for the 10gig laptop drive i have in my snesdrive assembly ;D) i was having the same sort of issue (only double equal sized partitions) i tracked down the fujitsu zeroing util and wiped my drive. hasn't even looked funny at me since. so as long as the drive is blank or you don't care about whats on it, hunt down the drive makers 'low level format' utility and give it a shot. ^_^ note: you WILL need to find the one from the maker of YOUR drive, mixing different drive/utility makers is a bad idea, they all perform the 'formats' differently, and the drives themselves don't like it when you try to do it wrong.