The hard drive of my backup PC with Win98 died so I replaced the drive with Win XP. I discovered, however, that the floppy disk drive no longer seems to work. Whenever I put a disk in which has no problem on other computers I get a "Please insert formatted disk" modal window with one choice, "cancel". According to XP, the hardware is in order but I noticed that when I right-click "properties" under "My Computer", it lists the File System as "RAW". What is going on here, and how do I fix it?