You can even unset this within macOS; it just requires a reboot: 1. Hold Cmd-R as you reboot. That puts you in recovery mode. 2. Bring up a terminal. 3. Run

You can even unset this within macOS; it just requires a reboot: 1. Hold Cmd-R as you reboot. That puts you in recovery mode. 2. Bring up a terminal. 3. Run 'csrutil disable' 4. Reboot back into regular mode