Not sure if this work but u can try.
After u connect to ur XP, note down the drive letter, say example
h:
open ur command prompt in the program,accesories.
type in the command prompt
format h: /fs:FAT32
If not u can try searching the web for Win98 boot disk. Load into
ur floppy and boot from it. Then use FDISK and Format to switch
back to FAT32.