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Last active December 24, 2015 16:09
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Disable Mac startup sound
Raw
disable-mac-startup-sound.md

Disable Mac startup sound

The startup sound doesn't play if the audio output was muted at shutdown.

  1. Copy login.sh and logout.sh to /Library/Scripts. Make sure they're executable and owned by root.

  2. Check if there are any existing login/logout hooks (they will be overwritten):

    sudo defaults read com.apple.loginwindow LoginHook
sudo defaults read com.apple.loginwindow LogoutHook

  3. Add the hooks:

    sudo defaults write com.apple.loginwindow LoginHook /Library/Scripts/login.sh
sudo defaults write com.apple.loginwindow LogoutHook /Library/Scripts/logout.sh

Source. Another solution.

Raw
login.sh
#!/bin/sh
# Unmute
/usr/bin/osascript -e 'set volume without output muted'
Raw
logout.sh
#!/bin/sh
# Mute audio
/usr/bin/osascript -e 'set volume with output muted'
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