I have a question for the Mac experts out here. Can you tell me how exactly to completely erase my hard drive and then re-install Mountain Lion? I'm essentially wanting to do do a seven pass deletion of my hard drive, and then reinstall Mountain Lion, but I don't know how to do this. Not sure if this changes anything, but I have a 13" Core MacBook Pro, standard model, that I upgraded them RAM on (16Gb), and also removed the mechanical hard drive and replaced it with a Samsung 840 Pro SSD. I used Carbon Copy Cloner to clone from my original mechanical hard drive to my current SSD. I would appreciate any help you can provide. Thanks!