Turn the Mac startup sound on or off

Use Sound preferences to turn the startup sound (chime) on or off.

Depending on which Mac and macOS you're using, you might hear a startup sound shortly after pressing the power button to turn on your Mac. 

With macOS Big Sur 11 or later, you can control whether your Mac plays this sound at startup. Choose Apple menu  > System Preferences, then click Sound. In the Sound Effects pane, use the “Play sound on startup” setting to turn the startup sound on or off.

Sound preferences window with "Play sound on startup" selected

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