The three ways to restart a Mac

You can restart an Apple computer in three ways: through the Apple menu, using keyboard shortcuts, or by holding the power button. The Apple menu method is the safest because it closes your open programs properly before restarting. The keyboard shortcut is faster if you know it. The power button method is a last resort when your Mac is frozen or unresponsive.

Each method takes a different amount of time and carries different risks. If your Mac is working normally, use the Apple menu. If it is sluggish but still responding, the keyboard shortcut works. If nothing else works, the power button is your only option—but it can cause data loss if you have unsaved work.

Key Takeaways

  • The safest restart is through the Apple menu: click the Apple icon in the top-left corner, select Restart, and let your Mac close programs before restarting.
  • The keyboard shortcut Control + Command + Power (or Control + Command + Eject on older Macs) restarts when ready without prompting you to save files.
  • Holding the power button for ten seconds forces a shutdown and is only for when your Mac is completely frozen.
  • Save your work before restarting through any method, because unsaved files will be lost if you use the keyboard shortcut or power button.

Restarting through the Apple menu (safest method)

Click the Apple icon in the top-left corner of your screen. A dropdown menu appears with options including Restart. Click Restart, and a dialog box asks whether you want to reopen windows when your Mac starts again—leave this checked unless you want a clean start.

Your Mac will close all open programs and save their state (if they support it). This takes a few seconds to a few minutes depending on how many programs are running. Once everything is closed, your Mac restarts automatically. This method is the gentlest on your system and your files.

Using the keyboard shortcut (fastest method)

Hold down Control + Command + Power at the same time. Your Mac restarts when ready without asking you to save anything. On older Macs (2016 and earlier), the key combination is Control + Command + Eject instead of Power.

This shortcut bypasses the normal shutdown process, so any unsaved work in open programs will be lost. Use this only when you need a fast restart and you have already saved your files, or when the Apple menu is not responding. If you are not sure which key combination your Mac uses, the Apple menu method is safer.

Force restarting when your Mac is frozen

If your Mac is completely unresponsive and neither the Apple menu nor the keyboard shortcut works, hold down the power button for ten seconds. The screen goes black and your Mac shuts down completely. Wait a few seconds, then press the power button again to turn it back on.

This method is harsh on your system because it cuts power without closing programs properly. Files you were working on will not be saved. Use it only as a last resort when your Mac is frozen solid and will not respond to anything else. After a force restart, your Mac may take longer to start up as it checks the hard drive for errors.

What happens during a restart

When you restart, your Mac shuts down all running programs, closes all open files, and powers off. After a few seconds, it powers back on and goes through its startup sequence. The Apple logo appears, followed by a progress bar (on newer Macs) or a spinning gear icon (on older ones). This process usually takes one to three minutes depending on your Mac's age and how much is installed on it.

During startup, your Mac checks its hard drive, loads the operating system, and reopens programs you had running before the restart (if you chose that option). You will see the login screen if you have a password set. Once you log in, your Mac is fully restarted and ready to use.

When to restart your Mac

Restart your Mac when a program is frozen and will not close, when you install a major software update, when your Mac is running slowly, or when you have not restarted in several weeks. A restart clears temporary files from memory and gives your system a fresh start. Many performance problems disappear after a restart.

You do not need to restart every day—modern Macs are designed to run for weeks without restarting. But if you notice your Mac is sluggish, programs are crashing, or the internet connection is dropping, a restart is often the first thing to try before calling for help.

Restarting in Safe Mode (for troubleshooting)

If your Mac is having problems, you can restart in Safe Mode, which loads only essential system files and disables third-party programs. To do this, restart your Mac using any of the methods above. As soon as the screen goes black and before the Apple logo appears, hold down the Shift key and keep holding it until you see "Safe Mode" in the login window.

Safe Mode is useful for testing whether a problem is caused by a third-party program or by macOS itself. If your Mac works normally in Safe Mode, one of your installed programs is likely the culprit. If the problem persists in Safe Mode, the issue is with macOS or your hardware. After you finish troubleshooting, restart normally to exit Safe Mode.

Frequently Asked Questions

Will restarting delete my files?

No. Restarting does not delete files on your hard drive. It only closes programs and clears temporary data from memory. Your documents, photos, and applications remain on your Mac after a restart. However, any unsaved work in open programs will be lost if you use the keyboard shortcut or force restart method.

How long does a restart take?

A typical restart takes one to three minutes from the moment you initiate it until your Mac is fully usable. Older Macs or Macs with many programs installed may take longer. If your restart takes more than five minutes, something may be wrong—try restarting again or contact Apple Support.

Can I restart my Mac while it is updating?

No. If macOS is installing an update, do not restart or shut down your Mac. Let the update finish completely, even if it takes a long time. Interrupting an update can damage your system. If an update seems stuck, wait at least 30 minutes before assuming something is wrong.

What is the difference between restart and shut down?

Restart powers off your Mac and then powers it back on when ready. Shut Down powers off your Mac completely and leaves it off until you press the power button again. Use Restart when you want to refresh your system. Use Shut Down when you are done for the day or before traveling with your Mac.

Why does my Mac restart on its own?

Your Mac may restart automatically if a major macOS update is installing, if your Mac is overheating, or if there is a serious system error. Check System Preferences > General to see if an update is pending. If your Mac restarts repeatedly without explanation, contact Apple Support or take it to an Apple Store for diagnosis.