Restart
It's amazing what a simple restart will fix. Especially if you rarely turn off your Mac, sometimes little things may start acting a bit quirky. Perhaps your Mac can't find the printer you've been using for months, or icons for new files don't appear. For little unexplainable things, restart.
To restart, go to the Apple menu and choose “Restart….”
If for some reason you can't get to the Apple menu, try the Restart button that is on most Macs. It's a tiny little round button with a triangle on it.
On laptops, you can press the Power button for one second and you'll get a little message with a button to restart.
If you can't restart, then Shut Down. Either use the Apple menu command, if you can, or as a last resort hold down the Power button ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access