21st November 2019


How do you do a hard reboot on a Mac?

Hold the power button for 5 seconds to shut off. Power on and hold the Shift key down when you hear the startup tone. This should perform a safe boot. Then goto System Preferences > Startup Disk > select your MacIntosh HD > click restart.

In this manner, how do you factory reset a MacBook Air?

Start up or Restart using macOS Recovery
  1. Turn on or restart your MacBook and hold down the Option+Command (?)+ R keys.
  2. Use Disk Utility to erase your startup disk AND any other internal hard disk.
  3. Select your drive's name from the left side list and click the Erase.
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