how large is win 98 drive, may need 1.5 gig, minimum, to use xp,
would have suggested copying /backup files to spare drive,
then install xp clean, then copy back files to drive,
external drives (usb type) not really meant to use as main c: drive,
depending on files / documents being saved,
note: if 32 bit or ntfs compatible programs,
may need to re-install later,
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