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"?
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 ...
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.