Set Firmware Password on Mac with macOS Mojave, Sierra, OS El Capitan, Mavericks

Check tutorial of How to Set a Firmware Password on a Mac with macOS Mojave, Sierra, OS X El Capitan, Mavericks

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Mac users in higher security risk situations may want to enable an optional firmware password on their machines, which provides an advanced level of security. Basically, a firmware password is a lower level of security set on the actual Mac logicboards firmware, rather than the software layer like FileVault encryption or the default login password. The result of setting an EFI password is that a Mac cannot be booted from an external boot volume, single user mode or target disk mode, and it also prevents resetting of PRAM and the ability to boot in Safe mode without log in using the firmware password first. This effectively prevents a wide variety of methods that could potentially be used to compromise a Mac, and provides exceptional security for users in need of such protection.

Important: Just like any other essential password, use something memorable but complicated, and don’t forget a firmware password after it’s set. A lost firmware password cannot be recovered on most modern Macs without visiting an Apple Store or sending a Mac to Apple Support for service and recovery. Older Mac models may be able to use a hardware intervention method to bypass firmware passwords, but these methods are not possible on new Macs without access to removable batteries or memory modules, so visit Apple.

How to Set a firmware password on a Mac

Setting a firmware password is quite easy, although it is handled a little differently in macOS Mojave, macOS High Sierra, macOS Sierra, OS X El Capitan, OS X Yosemite, and OS X Mavericks than in previous versions of Mac OS X.

  1. Restart the Mac and hold down Command + R to boot directly into recovery mode
  2. From the OS X Utilities splash screen, pull down the “Utilities” menu bar and choose “Firmware Password Utility”
  3. Firmware Password Utility

  4. Choose ‘Turn On Firmware Password’
  5. Enable the firmware password

  6. Enter the password twice to confirm, then choose “Set Password” to assign to assign that password to the Mac – don’t forget this password or you will lose access to the Mac
  7. Set a firmware password

  8. Choose “Quit Firmware Password Utility” to set the EFI password

Once the firmware password is set, you can restart the Mac as usual. For each standard boot or restart, the Mac will boot into macOS X as usual and go straight to the normal Mac OS X login screen.

When / where the firmware password is visible on Mac

The firmware password does not appear during a normal restart or restart of the Mac, it only becomes mandatory when the Mac tries to boot from alternate methods. This could be in situations where a Mac is attempting to boot from a Mac OS X installation disc, an external boot volume, recovery mode, single user mode, extended mode, target disk mode, resetting the PRAM, or some other alternative startup approach that will make it look pretty simple call up firmware password window. No password hints or additional details are provided, just a simple lock logo and text entry screen.

a Mac firmware password

An incorrectly entered firmware password does nothing or indicates a failed login, except that the Mac will not start up as expected.

Note that all modern Intel-based Macs refer to firmware passwords as Extensible Firmware Interface (EFI) passwords, while older Macs refer to them as Open Firmware. The general concept remains the same, just different hardware.

Should you use a firmware password on your Mac?

Most Mac users will find a firmware password an unnecessarily enhanced security measure and use it feature is best limited to Mac users in higher risk environments where maximum security is required. For the average Mac user, standard login authentication and screen saver password are usually enough protection, while enabling FileVault disk encryption can provide additional security benefits for users who want to protect their files and data from unauthorized access. FileVault can also be used as a means of preventing manual reset of account passwords on Macs in higher security risk environments, but as several readers have pointed out in the comments, the firmware protection should also be used in high security situations.

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How to Set a Firmware Password on a Mac with macOS Mojave, Sierra, OS X El Capitan, Mavericks: FAQ

Tutorial Summary: How to Set a Firmware Password on a Mac with macOS Mojave, Sierra, OS X El Capitan, Mavericks

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The time to complete the How to Set a Firmware Password on a Mac with macOS Mojave, Sierra, OS X El Capitan, Mavericks tutorial is 10+ minutes.

What are the supported Device?

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What are the supported Operating system?

mac OS


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