i installed a 13 gb western digital and sometimes (not real often) when it boots up (w95osr1) it shows twice as many patitions as originally setup. the pc has an older bios so i used the overlay program that came with it. i don't think it is the overlay program because i have the same problem with a maxtor 10 gb on a machine that doesn't need the overlay program. when it does this it copies the c drive to the additional drive letters. what do you think?