On Yosemite I disabled notifications with the following terminal command:

cd `getconf DARWIN_USER_DIR`
rm -rf com.apple.notificationcenter
killall usernoted; killall NotificationCenter

Does anyone know what I need to type to restore the original default notification setting?

1 Answer 1


What you've done here is delete the entire Notification Center database, not simply disable Notification Center. You will need to restore this container, preferably from a backup. Alternatively, you can reinstall OS X.

  • Yikes!!!!!To do reinstall OS X, do I need to reformat my hard drive or can I just reinstall OS 10 on top of what I have? Commented Nov 6, 2014 at 23:07

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