The fastest way to restart your Mac
The quickest reboot is the keyboard shortcut: hold Control + Command + Power (or Control + Command + Eject on older Macs). Your Mac will restart when ready without asking you to save anything. If you have unsaved work, this method will close it without warning, so save first if you need to.
If you want your Mac to ask before closing applications, use the menu instead. Click the Apple menu in the top left corner, then select Restart. A dialog box will appear giving you about two minutes to save your work before the restart happens automatically.
Key Takeaways
- Control + Command + Power restarts your Mac when ready without saving open files, so use it only when you have nothing unsaved.
- The Apple menu Restart option gives you time to save work before the reboot begins.
- A forced restart using Control + Command + Power is safe for your Mac hardware and does not cause damage, even though it skips the normal shutdown process.
- If your Mac is frozen and will not respond to keyboard or menu commands, hold the power button for ten seconds to force it off, then press it again to turn it back on.
Using the Apple menu to restart
Click the Apple logo in the top left corner of your screen. A dropdown menu will appear. Look for the word Restart and click it. A window will pop up asking if you want to reopen windows when your Mac starts back up — you can leave this checked or uncheck it depending on whether you want your applications to return to their previous state.
Your Mac will then close all open applications and restart. This method is gentler than the keyboard shortcut because it gives applications a chance to close properly and reminds you to save unsaved work.
Force restart when your Mac is frozen
If your Mac is not responding to clicks or keyboard commands, a force restart is necessary. Hold down the power button (located on the keyboard or the side of your Mac, depending on your model) for about ten seconds until the screen goes black. Wait a few seconds, then press the power button again to turn your Mac back on.
This method bypasses the normal shutdown process, but it will not damage your Mac. Your Mac is designed to handle forced restarts. However, any work you had open and unsaved will be lost, and some applications may need to repair their files the next time you open them — this usually happens automatically and you will not need to do anything.
Restarting in Safe Mode
Safe Mode starts your Mac with only essential system files loaded. This is useful if your Mac is running slowly or if an process is causing problems. To restart in Safe Mode, hold the Shift key when ready after you press the power button to turn your Mac on. Keep holding Shift until you see the login screen, then release it.
Your Mac will start up more slowly than usual and will show "Safe Boot" in the login window. Once you are logged in, you can restart normally by using the Apple menu or keyboard shortcut. Safe Mode is temporary — your next restart will return your Mac to normal mode.
What happens during a restart
When you restart your Mac, it shuts down all running applications and processes, clears the memory, and starts fresh. This often fixes problems like slow performance, frozen applications, or internet connection issues because it clears out temporary files and resets system processes.
A restart is different from putting your Mac to sleep. Sleep keeps your Mac in a low-power state and wakes up quickly, but a restart completely powers down and starts over. If your Mac has been running for days or weeks without a restart, a reboot can noticeably improve performance.
When to restart your Mac
Restart your Mac if an process is frozen and will not close, if your Mac is running much slower than usual, after installing system updates (macOS will often prompt you to restart), or if you are experiencing internet or network problems. You should also restart if you have connected a new external device like a printer or external hard drive and your Mac is not recognizing it.
There is no harm in restarting your Mac regularly — many people restart once a week or once a month as routine maintenance. If you leave your Mac on for weeks without restarting, performance may degrade over time.
Frequently Asked Questions
Will restarting my Mac delete my files?
No. A restart does not delete any files on your hard drive. It only closes applications and clears the memory. All your documents, photos, and other files remain exactly where they were before the restart.
How long does a Mac restart take?
A typical restart takes between 30 seconds and two minutes, depending on your Mac model and how many applications you have installed. Older Macs or Macs with many applications may take longer. Safe Mode restarts are slower and can take three to five minutes.
Is it safe to force restart my Mac?
Yes, force restarting is safe for your Mac hardware. Macs are designed to handle forced shutdowns. The only downside is that unsaved work will be lost and some applications may need to repair files when you open them next, which usually happens automatically.
What is the difference between restart and shut down?
Restart closes all applications and turns your Mac off, then when ready turns it back on. Shut down closes all applications and turns your Mac off completely — it stays off until you press the power button again. Restart is better for fixing problems; shut down is better if you are not going to use your Mac for a while.
Can I restart my Mac while it is updating?
No. If your Mac is installing a system update, you should not restart it manually. Let the update finish and restart on its own. Interrupting an update can cause problems. If an update seems stuck, wait at least 30 minutes before trying a force restart.