My iMac will restart to install updates, but after logging in again, nothing happens. Even if I click the Apple logo and go to "Software Update", it tells me it still has to install the updates and to restart again. Having to end up with nothing again. Help please? =(
Check /Library/Updates/ for folders with numbers. If there are any, open one and double-click the one with a dist extension. If that installs, then repeat with any others. If not, manually download the updates and then install them.