Just some basic info for anyone having these issues; Check the earlier posts-LNC,Poertner's advice works; -Windows(all flavours) can often become 'confused' with different types of 'removable' drives,Shares and periferals that require a Drive letter upon connection. Each time an item is connected then disconnected, drive letters dance around. I believe the biggest problem occurs between the Rom drives, mapped shares and these removable drives. Windows assigns drive letters to HDD's(partitions) first then Roms >removable items. To reduce confusion Change the drive letters to your Roms first,Some where in the latter half of the Alphabet(I use 'W' for writing drives V for DVD ,etc) Then follow the installation instructions for any removable drives then change those letters to leave some space between the Partitions and those drives.(eg. Middle of Alphabet) You should have less issues if you try this. Also Microsoft now offers a Free' USB Flash Drive Manager" (They know what goes on,then eventually they react) I have not used it my system seems to work fine with my setup. However go to "Microsoft/windows/partnerpack/desc/ufd.htm " ; and see what you think!It makes sense to me ,for what it is worth.