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Disable Mac startup sound

Disable Mac startup sound

Anyone know how to disable that cheesy startup sound when I power on my Mac?

Asked by: Guest | Views: 36
Total answers/comments: 1
Guest [Entry]

"Open Terminal
Copy and paste the following line of code in Terminal

sudo nvram SystemAudioVolume=%80

Restart and rejoice in the sweet sound of nothing.

If you get lonely and want to re-enable the startup sound repeat steps 1 thru 3 but use this command instead..

sudo nvram -d SystemAudioVolume

Works like a charm on my '12 Macbook Pro w/ OSX Mavericks. Worked when I had Mountain Lion as well."