Hello, I'm using a Compaq with a Intel Celeron D 2.93 gig processor with Windows XP home edition. I also have a Western Digital 2500JB external USB hard drive. The problem is that when I want to save something on the internal hard drive to the external (I almost always just drag and drop) its telling me that the disk is full. However, whenever I check the properties it says the disk more than half empty (130 free gig out of 250). I hope thats enough info and I appreciate any help anyone can offer. Sorry if I've wasted your time on something easy that I may have looked over. Thanks again.