
When you restart your Mac, the OS X boot chime should no longer play. Now you’ll be prompted to type in your administrator password.Wait for the Terminal UI to display your computer’s name (root directory) and punch in: CODE sudo nvram SystemAudioVolume=%80.Launch Terminal (from Applications > Utilities > Terminal).Yes, it could be annoying to always hear a boot chime when you start up your Mac.

How Can I Disable a Boot Chime When I Start Up My Mac?

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