Be sure to find it with TREESIZE and then we get to discuss NTFS oddities such as CLUSTER SIZE in NTFS.
On such a small drive the slack space could wipe it out if the cluster size was not the same, so be sure to check that.
I'll skip adding links because we are talking about an over decade old OS and you appear to have more than one PC so you know your way around the block.
I have two Dell 5150 computers with xp and a 75 gb hard drive. One is a backup. Both had the same programs on them. My regular computer has only 6 gb of free space yet the backup has 60 gb of free space. I do have more picture on this one but only 5 or 6 gb.
I tried cleanign things up with Cclean
I can;t figure out why the hard drive is so full and of waht?
thanks in advance.