The fastest way to restart your Mac

The quickest restart 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, save it first — this shortcut bypasses the normal shutdown process.

If you prefer a gentler restart that gives you time to save your work, use the Apple menu instead. Click the Apple logo in the top-left corner, select Restart, and a dialog box will appear asking if you want to save changes to any open documents. You have about two minutes to respond before the restart happens automatically.

Key Takeaways

  • Control + Command + Power restarts your Mac when ready without prompting you to save, so save your work first if you need to.
  • The Apple menu restart method gives you time to save open documents before the restart begins.
  • If your Mac is frozen and won't respond to keyboard or mouse, force restart using Control + Command + Power, then take it to an Apple Store or technician if the problem repeats.
  • Restarting clears temporary files and memory, which often fixes slow performance, app crashes, or connection problems.
  • Your Mac will take 30 seconds to 2 minutes to fully restart depending on how many apps and files you have.

Using the Apple menu to restart safely

The Apple menu method is the safest choice when you have unsaved work. Click the Apple logo in the top-left corner of your screen, then click Restart from the dropdown menu. A window will appear asking "Are you sure you want to restart your computer now?" with options to cancel or restart.

Before you click restart, save any open documents in your apps. Once you click the restart button, your Mac will close all open apps and files, then restart. This process normally takes 30 seconds to 2 minutes depending on how many apps you have running and how much data your Mac needs to write to disk.

If you see a message saying "There are unsaved changes in [app name]," click Save in that app before restarting. If you click restart without saving, you will lose any work you did since the last time you saved that document.

Force restart when your Mac is frozen

If your Mac is completely frozen and will not respond to your mouse or keyboard, a force restart is your only option. Hold Control + Command + Power for about 10 seconds until your screen goes black and you hear the startup sound. Your Mac will restart when ready without giving you a chance to save.

Force restart should only be your last resort because it can cause data loss and may damage files that were being written when you forced the shutdown. If your Mac freezes regularly, restart it using the normal Apple menu method when possible, and consider taking it to an Apple Store or a Mac technician to find out why it is freezing.

After a force restart, your Mac may take longer than usual to start up because it is checking the hard drive for errors. This is normal and usually takes less than 5 minutes. If your Mac gets stuck on the startup screen, hold the power button for 10 seconds to turn it off completely, wait 30 seconds, then press the power button again to turn it back on.

What happens during a restart

When you restart your Mac, it closes all open apps and files, clears temporary data from memory, and shuts down completely. Then it powers back on and loads the operating system fresh. This process clears out temporary files and memory that can slow down your Mac or cause apps to crash.

Restarting is often the first step to fix common problems like slow performance, apps that keep crashing, internet connection problems, or a mouse and keyboard that stop responding. Many of these issues happen because temporary files build up in your Mac's memory, and a restart clears them out.

Your Mac will restart with all the same apps and settings you had before, but any work you did since the last save will be gone. macOS also has a feature called Resume that remembers which apps were open when you restarted, so they will open automatically when your Mac starts up again.

Restart vs. shutdown: when to use each one

A restart and a shutdown are different. A shutdown turns your Mac off completely and leaves it off until you press the power button. A restart turns your Mac off and when ready turns it back on. Most of the time, a restart is what you want because it clears out temporary files and memory while keeping your Mac ready to use.

Use shutdown only when you are done using your Mac for the day or when you need to move it or store it. Use restart when you are troubleshooting a problem, installing software updates, or your Mac is running slowly. If your Mac is very hot, shut it down and let it cool for 15 minutes before restarting.

Restarting after a software update

When you install a macOS update or app update, your Mac will often ask you to restart. Click Restart Now to restart when ready, or click Remind Me Later to be asked again in a few hours. If you click remind me later, your Mac will ask you again the next time you open System Settings or the App Store.

Do not ignore restart requests for more than a day or two. Updates often include security fixes that protect your Mac from viruses and hackers, so restarting soon after an update is important. If you have unsaved work, save it first, then restart.

During a restart after an update, your Mac may take longer than usual to start up — sometimes 5 to 10 minutes. This is normal because your Mac is finishing the installation of the update. Do not turn off your Mac or unplug it during this time, or the update may not finish correctly.

Troubleshooting restart problems

If your Mac will not restart using the Apple menu, try the keyboard shortcut Control + Command + Power instead. If that does not work, your Mac may be completely frozen. Hold the power button for 10 seconds until the screen goes black, wait 30 seconds, then press the power button again to turn it back on.

If your Mac restarts but gets stuck on the startup screen showing the Apple logo and a loading bar, let it sit for up to 10 minutes — startup can be slow after an update or if your hard drive is very full. If it is still stuck after 10 minutes, hold the power button for 10 seconds to turn it off, wait 30 seconds, then try again.

If your Mac restarts but then when ready shuts down again, or if it restarts over and over without stopping, take it to an Apple Store or a Mac technician. This usually means there is a hardware problem or a serious software issue that needs professional help.

Frequently Asked Questions

Will restarting my Mac delete my files?

No. Restarting only closes your open apps and clears temporary data from memory. All your files, photos, documents, and settings stay on your Mac. The only thing you lose is any work you did in an app since the last time you saved that document.

How long does a Mac restart take?

A normal restart takes 30 seconds to 2 minutes from the moment you click restart until your Mac is ready to use again. After a software update, it may take 5 to 10 minutes. If your restart is taking longer than 15 minutes, something may be wrong — hold the power button for 10 seconds to turn it off and try again.

Can I restart my Mac while it is installing an update?

No. If your Mac is in the middle of installing an update, do not restart it or turn it off. Wait for the update to finish, which may take 10 to 30 minutes. If the update appears to be stuck for more than an hour, hold the power button for 10 seconds to turn it off, wait 30 seconds, then turn it back on.

What is the difference between restart and safe mode?

A normal restart loads your Mac with all your apps and settings. Safe mode is a special startup mode that loads only the essential parts of macOS and disables third-party apps and extensions. Safe mode is useful for troubleshooting problems caused by apps or extensions. To start in safe mode, restart your Mac and hold Shift when ready after you hear the startup sound, then release Shift when you see the login screen.

Should I restart my Mac every day?

You do not need to restart every day, but restarting once or twice a week helps keep your Mac running smoothly. If your Mac is running slowly, apps are crashing, or you notice connection problems, restart it right away. If you leave your Mac on for weeks without restarting, temporary files can build up and slow it down.