Startup

Disable the Startup Sound

Disable the Startup Sound

To permanently mute the startup sound, open the terminal and type: sudo nvram SystemAudioVolume=%80 sudo nvram SystemAudioVolume=%01 sudo nvram SystemAudioVolume=%00 sudo nvram SystemAudioVolume=” “ Its depending on some models. To restore the startup chime, type: sudo nvram -d SystemAudioVolume To temporarily disable the startup sound, just press the “Mute” button on your keyboard (that’s the(…)

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Startup Keys

Startup Keys

Some Mac features are available by holding down certain keys during startup. Press and hold the keys immediately after you turn on your Mac and hear the startup sound. Keep holding until the described behavior occurs. These combinations work with Intel-based Mac computers. Hold during startup Description Shift ⇧ Start up in Safe Mode. Option ⌥ Start up(…)

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