Chapter 28. Enabling Firmware Password Protection
Firmware password protection is another layer of security that can help safeguard your Mac and the data stored on it. With it enabled, users are prevented from booting from another startup disk or entering single-user mode—a command-line interface that can be accessed at startup. This feature is especially effective in enterprise or educational environments where administrators can secure the physical hardware but cannot be present to prevent tampering by employees or students. For example, unauthorized users can’t start the computer from a USB emergency drive—like the one described in Chapter 38—when firmware password protection is enabled.
Firmware password protection isn’t a substitute for encryption ...
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