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In Mountain Lion I was able to permanently disable Notification Center, with no apparent side effects:

launchctl unload -w /System/Library/LaunchAgents/com.apple.notificationcenterui.plist
killall NotificationCenter

However, the Mavericks upgrade process restored Notification Center in all its irritating glory. Is there are reason that the upgrade reverted my disabling of Notification Center?

Can I disable Notification Center in Mavericks using the same procedure, without side effects?

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2 Answers

up vote 2 down vote accepted

If you do:

sudo defaults write /System/Library/LaunchAgents/com.apple.notificationcenterui KeepAlive -bool False

and restart, this did the trick for me in Mavericks.

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FWIW: The old procedure has worked for me so far, though a restart is also required to prevent a completely blank panel from appearing in place of Notification Center when the mouse is moved to the far upper-right corner of the screen. –  raxacoricofallapatorius Oct 23 '13 at 18:20
This actually disables Notification Center because it changes the permissions of the plist from 644 to 600. If you change KeepAlive to false some other way that doesn't change the permissions of the plist, the NotificationCenter process is still started at login but it is not relaunched if it terminates for some reason. To undo the changes, run f=/System/Library/LaunchAgents/com.apple.notificationcenterui.plist;sudo defaults write $f KeepAlive -bool true;sudo chmod 644 $f;launchctl load $f. –  Lauri Ranta Nov 29 '13 at 18:59
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Just unloading the plist still works for me:

launchctl unload -w /System/Library/LaunchAgents/com.apple.notificationcenterui.plist

If the plist is not loaded, sudo defaults write /System/Library/LaunchAgents/com.apple.notificationcenterui KeepAlive -bool False should have no effect.

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