Hi Riptide. You can set up your computer for dual booting although I don't know how, but following your line of thinking what I think you want to do is to set your old drive as slave and your new empty drive as master. Then using your boot floppy you can format the new drive as the system drive (format/s) and load Win ME and all your software onto the new drive, while all your saved files will still be on your old drive. If you want to go back to Win 98, you simply return your old drive to master and your new one to slave. Your BIOS is almost certainly set to boot from the C drive which will normally be whichever is in the primary master position.