Catrin, the C: drive is 20GB, with 19.9 used. The D: drive is 54GB with only 6.41 used.

As for why it's partitioned, that's a good question. When I purchased the computer, I understood that it was good to have separate "areas" for programs and for documents (photos, documents, xls, music, etc.) That may not be the case, but that's my understanding.

My neighbor, who knows more than me but not enough to do the work, also said that reformatting wipes everything clean. I have my docs and stuff backed up, but I have no idea if my software is backed up. I do have CDs that came with my computer. Other software has been downloaded, and I would hate to lose that (a nifty budgeting tool, for example). I use Thunderbird for email, and I don't even know if that's in the cloud or on the computer. But now that I mention it, I'll try cleaning out my email and see if that helps. If that's a complete "Duh!" moment, please be easy on me!

Thanks for your help, Catrin.