OS X Mountain Lion: Back up files with Time Machine
This article has been archived and is no longer updated by Apple.
You can have Time Machine perform a backup at any time, even if the On/Off switch in the Time Machine preference pane is Off.
From the Time Machine menu in the menu bar, choose Back Up Now.
If the Time Machine menu isn’t in the menu bar, open Time Machine preferences and select “Show Time Machine status in menu bar.”
Last Modified: Sep 4, 2015