Mac User Guide
- Welcome
- What’s new in macOS Tahoe
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- Intro to Apple Intelligence
- Translate messages and calls
- Create original images with Image Playground
- Create your own emoji with Genmoji
- Use Apple Intelligence with Siri
- Find the right words with Writing Tools
- Summarise notifications and reduce interruptions
- Use ChatGPT with Apple Intelligence
- Apple Intelligence and privacy
- Block access to Apple Intelligence features
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- Intro to Continuity
- Use AirDrop to send items to nearby devices
- Hand off tasks between devices
- Control your iPhone from your Mac
- Copy and paste between devices
- Stream video and audio with AirPlay
- Make and receive calls and text messages on your Mac
- Use your iPhone internet connection with your Mac
- Share your Wi-Fi password with another device
- Use iPhone as a webcam
- Insert sketches, photos and scans from iPhone or iPad
- Unlock your Mac with Apple Watch
- Use your iPad as a second display
- Use one keyboard and mouse to control Mac and iPad
- Sync music, books and more between devices
- Resources for your Mac
- Resources for your Apple devices
- Copyright and trademarks
If your Mac restarts and a message appears
If your Mac restarts unexpectedly, an error known as a kernel panic occurred, and a message indicates that your computer restarted because of a problem.
The most likely cause is faulty software. A kernel panic can also be caused by damaged or incompatible hardware, including external devices attached to your Mac.
If the kernel panic is caused by a known problem, the faulty software is identified. To make sure that this software doesn’t continue to cause kernel panics, move it to the Bin.
If the faulty software is not identified and your Mac continues to experience kernel panics, try the following:
Restart your Mac in safe mode. If it successfully starts up in safe mode, choose Apple menu
Uninstall any plugins or other enhancement software from manufacturers other than Apple. If you recently updated macOS or an app, plugins and other software that worked in the past may no longer be compatible. Read the manufacturer’s documentation (including Read Me notes) to be sure the software is compatible with your version of macOS.
Disconnect all devices except for an Apple keyboard and mouse. Remove hardware upgrades from other manufacturers, such as random-access memory (RAM) and Peripheral Component Interconnect (PCI) cards. Then try restarting your Mac.
If this resolves the issue, reconnect one device at a time, restarting your Mac after reconnecting each one, until you determine which device is causing the problem.
Use Apple Diagnostics to diagnose problems with your computer’s internal hardware, such as the logic board, memory and wireless components. See the Apple Support article Use Apple Diagnostics to test your Mac.
If the suggestions above don’t help, try reinstalling macOS.
Note: If you moved or renamed a system file or folder, you must reinstall macOS — it won’t work to just replace or rename the item.