Setting a firmware password ensures, that your Mac will only start from your startup disk and not from any other internal or external disks. Normally you will not be asked to enter the firmware password at boot time, only when you try to boot from a different drive or DVD.
To boot in special modes like: recovery mode and single user mode the firmware password is required too.
How to fix it
macOS 10.11 – 11.0
- Turn off your Mac
- Go into Recovery Mode by immediately holding down the Command and R keys after power on.
- Wait until the Utilities screen appears.
- Click on the Utilities menu from the menu bar.
- Select Firmware Password Utility.
- Click on the Turn On Firmware Password…
- Enter a new password, verify it and click the Set Password button.
- Click on Quit Firmware Password Utility
- Restart you Mac.
Keep in mind: not every security and privacy setting is suitable for everyone. Enhancing the security can lead in losing functionality and/or comfort.
Before making changes, please backup your Mac! Do not make too many change at once. After changing your Mac, check if your normal usage of your Mac has changed in a way which fits to you. Are your really willing to loose some functionality and/or comfort?
Most important is, that you learn and understand what are the advantages and disadvantages of the security settings and that you are aware about the capabilities and risks of your Mac configuration.
To skip this result message from your next security scan, you can deactivate this check. FAQ: How to deactivate a check.
CHECK RESULTS BY SIMPLEUMCHECK DO NOT COVER ALL ASPECTS OF POSSIBLE SECURITY CHECKS OR MAYBE INCORRECT OR INCOMPLETE. THE RESULTS ARE ONLY CLUES FOR RECOMMENDATIONS TO IMPROVE SECURITY AND PRIVACY ON THE MAC.
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