Secure Your Mac with a Firmware Password. In this tutorial, I show you how to better secure your Mac. I will enable a dummy guest account, turn off auto login, turn on Location Services, and set a Firmware Password. This is to protect your Mac in case it is lost or stolen. This will stop anyone from erasing the hard drive, stop a reinstall of the OS, prevent viewing of your data, and allow the computer to be online so you can find it with iCloud. NOTE: if you do this, just remember to write down the password and keep it in a safe location. If you forget the password, you will most likely have to take your computer to Apple to have it reset.
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