I'm trying to reformat a second drive (Drive E) I recently added to my pc, and leave my main drive alone (Drive C). I did a fresh install on C without E attached and only added it after everything has been setup on C. The second drive (E) used to be a primary drive on a previous rig and has an XP OS on it from that time. I've since built a new system, with a totally new drive (again, this is my C on the new rig and I don't want to reformat this one at all) and decided that I'd like to backup my data and inserted the old hard drive (E) for this purpose. I'd like to reformat it and have it clean for just storing data, and so I don't have a second OS installed that might lead to issues. When I go to drive E, which is the drive letter assigned to it after I inserted it into my new pc, and when I click format, it it keeps saying it can't. I keeps telling me I need to close all windows that show it's contents, but I have nothing opened. I even restarted and went right to the drive. How come I can't do this, and how can I overcome it? Please post details as although I've got some knowledge, I'm still in the learning/beginner stage and I really need to be hand held As much detail as possible plz. Thanks!!