How to revive or restore an unresponsive Mac from another Mac

If your recent series Mac won’t boot, you can try to “revive” or “restore” it.
imacs 2019 models
  • Mac
  • Troubleshooting
Glenn Fleishman’s most recent books include Take Control of iOS & iPadOS Privacy and Security, Second Edition (covering iOS 15/iPadOS 15), Take Control of Your M-Series Mac, and Take Control of Securing Your Mac. In his spare time, he makes Tiny Type Museums. He’s a senior contributor to Macworld, where he writes Mac 911.