I erased my HD and am trying to re-install Mac OS X Lion. I forgot which Apple ID account and password I used. How can I re-install OS X Lion then? And what is a "keychain password"?
I've created a new account for my new MacBook, and want to join it with the old account. I'll probably reset and then input the correct account ID.
Mine is the sole administrative account of a 2010 Apple Mac Mini running OS X 10.7. Somehow I have not been able to log in to the computer. I've searched the net and heard that I could do a reset ...