I have a few hard drives laying around from previous computers. My current build has 8 slots, so I figured that (until I can afford new ones) I'd pop them in for a little storage-boost. The problem is that, in their current formats, a number of them aren't working with my computer, and I'd like to back them up to my external before I reformat them (note: by not working, I mean that viewing them in explorer can take hours, as each page needs minutes to load).