Nov 26 2011
Forgot your OS X Lion password? Need help? Here’s how you can make use of your Apple ID to reset your password, other than resetting it with the passwordreset command line tool or by creating a new user account.
Resetting a Lost OS X Lion Password Using an Apple ID
Before you begin with this method it’s crucial to note that, this method only works if you set an Apple ID to tie with the OS X user account, and this option will not be suitable for users with FileVault 2 protection enabled. Also note that this leads to the creation of a new keychain, but the old keychain will remain intact.