I recently got a new Macbook Pro and am giving my old 2007 refurbished Macbook to a friend. It is running Leopard. I want to reset it to factory settings, format it, delete everything - you get it. I don't think I have a ~disk~ that people are referring to in other forums, and I've tried to do the reboot - command+r, command+s, command+option+r, but nothing seems to work, and I think this may be because I have such an old model. Help! I know this is a frequently asked question but none of the other tricks have worked for me. I just want to make sure everything's gone when I give it away, that's all.