Ways to start up your Mac
Normally you can restart your Mac by choosing Apple menu 
Method | Details |
|---|---|
Manually restart | Press and hold the power button on your Mac until it shuts off. After a moment, press the power button again to start your Mac. You may lose unsaved changes in open documents. |
Prevent automatic login | When the progress indicator appears, press and hold the left Shift key. |
Prevent login items and Finder windows from opening when you log in | After clicking the Log In button in the login window, press and hold the Shift key. |
Start up in target disk mode | See Transfer files between two Mac computers using target disk mode. |
Use Apple Diagnostics | |
Select a startup disk | |
Start up in safe mode | |
Start up in macOS Recovery | See Use macOS Recovery on an Intel-based Mac or Use macOS Recovery on a Mac with Apple silicon. |
For information about keyboard shortcuts you can use to start up an Intel-based Mac, see the Apple Support article Mac startup key combinations.