I'm sure this has been asked a million times before, and I did search and find a few answers but I just want to ask and triple confirm: I got a new MacBook a few months ago and my mom (who is not happy with her less than 6 month old HP computer that is practically useless now) wants my old mid-2009 MacBook. I, obviously, need to erase the hard drive and reinstall Mountain Lion on it. Is it true that all I need to do really is turn the computer on while holding command and R, select Disk Utility when the OSX Recover box comes up, then erase the hard drive? Or is it through reinstall OS X? I know it is a fairly straight forward process, just need to know the right button to press so I don't end up screwing things up. Thanks in advance.