I want to restore my Macbook Pro 2011 to its factory settings. There were a few questions I had for anyone who has preformed this operation before: 1.) When I inserted the Snow Leopard disc and initiated the restore, I had the option to erase the files on the drive. This is what I plan to do. However, I have the option to erase "Macintosh HD" with 319 GB capacity or the Hitachi drive, which had a labeled 320 GB capacity. What is the extra 1 GB on the Hitachi factory drive? I'm guessing I don't want to delete that. 2.) I've searched to try to find the applications that are included with the Applications Install DVD, but only find torrent links. Does this DVD include everything that came with my MBP upon purchase? I've noticed FaceTime is a paid app. My question is, would I lose any of the default applications by doing this factory restore? Thanks in advance for any advice, suggestions or input you can provide.