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macOS User Guide
- Welcome
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- Use Continuity across your devices
- Use your iPad as a second display
- Hand off between devices
- Insert photos and scans from iPhone or iPad
- Insert sketches from iPhone or iPad
- Copy and paste between devices
- Use Apple Watch to unlock your Mac and approve requests
- Make and receive phone calls on your Mac
- Control accessories in your home
- Send files between devices with AirDrop
- Use AirPods with your Mac
- Stream content to Apple TV
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- Understand passwords
- Use keychains to store passwords
- Reset your Mac login password
- Set up your Mac to be secure
- Guard your privacy
- Protect your Mac from malware
- Use Sign in with Apple for apps and websites
- Clear your Safari browsing history
- Manage cookies and other website data in Safari
- Find a missing device
- Resources for your Mac
- Resources for your Apple devices
Start up your Mac in safe mode
Starting up your Mac in safe mode may help you diagnose problems with your Mac.
Note: To print these instructions, press Command-P.
On your Mac, choose Apple menu
> Shut Down.After your Mac shuts down, wait 10 seconds, then press the power button.
Immediately after your Mac starts (some Mac computers play a startup sound), press and hold the Shift key.
Release the Shift key when you see the gray Apple logo and progress indicator.
To leave safe mode, restart your Mac again, but don’t press and hold any keys during startup.
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