Forgot a Mac Firmware Password? Don’t Panic, Here’s What To Do
Users who require higher than usual security measures often set a firmware password on a Mac, which requires that a password be entered before the typical OS X boot sequence begins. While these low level passwords are quite secure, but that higher security also means a forgotten firmware password can be a significant problem. Nonetheless, if you wind up in a situation where you or another user has forgotten a low level firmware password on a Mac, don’t panic, because you may be able to recover the password or bypass it using one of the methods outlined below. If all else fails, Apple can possibly help you too.