Understand the limitations. While you'll be able to use the following method to bypass the login on most Macs, some Mac users will have enabled FileVault and/or a firmware password, making it impossible to hack the Mac without knowing the password(s) Keep in mind that the Mac user will know that someone accessed their computer due to the password change Restart the Mac. Click Restart at the bottom of the login screen. If you're logged into the Mac, click the Apple menu , click Restart... , and click Restart when prompted. Press and hold the ⌘ Command and R keys. You'll need to do this immediately after clicking Restart Release the keys when you see the Apple logo. This will cause your Mac to start into the recovery menu. Click → . It's at the bottom of the screen. Click Utilities . This menu item is at the top of the screen. Clicking it prompts a drop-down menu. Click...