Start computer in safe mode mac

The Shift key should be held as soon as possible after the startup tone but not before.

What is safe mode?

If you use the login screen on your Mac, "Safe Boot" will display on the startup screen. Contact Us. How do I boot my Mac into Safe Mode?


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Safe mode can be a useful tool when troubleshooting issues on your Mac. It disables any third-party drivers like scanner drivers.


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If a behavior in a program is reproducible in a regular boot but not in safe mode, the behavior might be related to one of the following: Device Drivers, like scanner drivers. Third-party services or extensions that automate tasks or enhance user experience in Mac OS.

Start in Safe Boot mode | Mac OS X

Third-party plugins, such as contextual menu items or toolbar buttons. If your Mac has an issue that goes away when you start up in safe mode, you might be able to isolate the cause. If an issue doesn't happen when your Mac is started in safe mode, try restarting without pressing any keys.

Reasons to start your Mac in Safe Mode

Your Mac automatically checks the directory of your startup disk when you start up in safe mode. If the directory is repaired, your Mac automatically restarts.

7 Mac Startup Options Every OS X User Should Know

Then start up in safe mode again. The login window also displays "Safe Boot" in the upper-right corner of the screen when your Mac is in safe mode. Safe mode in OS X Leopard v Your screen might also "blink" or "tear" during login when your Mac is started in safe mode. Use safe mode to isolate issues with your Mac You can use safe mode to help resolve issues that might keep your Mac from completely starting up, or to isolate other issues related to your startup disk. What is safe mode?

How to boot macOS into safe boot or safe mode - macOS troubleshooting

Starting your Mac in safe mode does the following: Start up in safe mode To start up in safe mode: Start or restart your Mac, then immediately press and hold the Shift key. Release the Shift key when you see the login window.

7 Mac Startup Options Every OS X User Should Know

To leave safe mode, restart your Mac without pressing any keys during startup. If an issue doesn't happen in safe mode If an issue doesn't happen when your Mac is started in safe mode, try restarting without pressing any keys. If the issue doesn't come back, it was probably caused by a cache or directory issue with your startup disk, which safe mode fixed. If your Mac restarts or shuts down in safe mode Your Mac automatically checks the directory of your startup disk when you start up in safe mode.