. Start up from: Press and hold Command (⌘)-R immediately after turning on your Mac, and release the keys when you see the Apple logo or a spinning globe. When the utilities window appears, click Utilities in the menu bar, then choose Firmware Password Utility or Startup Security Utility. This utility is available only on Mac models that support use of a firmware password. Click Turn On Firmware Password. Enter a firmware password in the fields provided, then click Set Password. Quit the utility, then choose Apple () menu Restart.
Forgot a Mac Firmware Password? Don’t Panic, Here’s What To Do. Than usual security measures often set a firmware. Mac – How to set an Open. Sep 29, 2017 - Security researchers at Duo discovered that Apple Mac computers are. To firmware—potentially leaving a core part open to compromise.
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Your Mac asks for the firmware password only when attempting to start up from a storage device other than the one, or when starting up from macOS Recovery. Enter the firmware password when you see the lock icon and password field.