Hey people i have a problem.... When i purchased my mac about a year ago i set up accounts & passwords for everyone in the family. I also setup a master password. It's now been a year..I recently tried to change the password to one of the accounts..it asked me for the master password...I CANNOT REMEMBER IT.... I have tried every password i can remember..i even tried some ex-girlfriends names with no luck. My question is since I've been using time machine to backup my system. If i format the mac and restore it from a backup...will the master password be on the restored mac?