If you want to turn off a firmware password on your Mac that you've set up, the process is basically the same as above, except at step 4 you click Turn Off Firmware Password. With the firmware password set, no one will be able to access your Mac's data by using an external hard drive. Click the Apple () menu and select Restart.Enter the same firmware password in both fields provided, then click Set Password.Wait for the OS X Utilities screen to appear, then select Utilities -> Startup Security Utility from the menu bar.Turn on your Mac and then immediately press and hold down the Command (⌘) and R keys to activate Recovery Mode.Power off your Mac if it's already running.How to Set a Firmware Password on Your Mac With that caveat in mind, here are the steps you can take to set up a firmware password on your Mac. In fact, if you forget the firmware password, the only way to get it reset is to schedule an in-person service appointment with an Apple Store or an Apple Authorized Service Provider. The password is held in a special area of persistent memory on your Mac's mainboard, so it's not something you can reset easily like other passwords. We commit not to use and store for commercial purposes username as well as password information of the user. LoginAsk is here to help you access Password Not Working Mac quickly and handle each specific case you encounter. However before you follow through with the procedure, there's a potential drawback you should definitely consider. Password Not Working Mac will sometimes glitch and take you a long time to try different solutions. Enter your new password in the New Password field, then enter it again in the Verify field. Enter your current password in the Old Password field. If you’ve forgotten your login password and can’t open your Mac, see Reset your Mac login password. Click System Preferences, and then click Users & Groups. On your Mac, choose Apple menu > System Preferences, then click Users & Groups. One way to eliminate this vulnerability is by setting a firmware password on your Mac, which will prevent it from working with any other bootable volume than the one you've designated. On your Mac, click the Apple icon in the top -eft corner of your screen. However, neither security method will prevent someone from booting your machine from an external hard drive. Using a login password on your Mac is a simple way of ensuring your macOS user account stays private, and using FileVault to encrypt your startup disk means only users who can log in to your Mac can read the disk's data.
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