How many physical drives do you have in your system? If you nly have one, your drive was partitioned beforehand, one of the partitions was 5GB. So when you loaded XP, rather than check which partition you wanted it installed on, you probably just hit ENTER and it installed in on whichever partition was selected.
So which partition did you try and format and how did you try and format it? You don't have the XP disk anymore?
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