The Apple logo appears, progress bar shows zero, then the computer reboots.įor those reading this in hopes of finding a solution to your own problem, I’m running a Mac Pro 5,1 hexa-core with MacOS Sierra 10.12.5. I turned my computer on and it began rebooting itself over and over and over and over and… you get the point. That’s it, now the restart bug should be gone and you should have High Sierra or the most recent OS available for your computer. After choosing that, your computer will start updating to the most recent OS version.

The second is the one you want, which is “Reinstall Mac OS”. Then a loading bar appears and after some time the desktop will come up with a window in the center. Wait until you see a globe, then you can release the keys. Press the power button and then quickly press and hold those keys. If the computer is on, hold the power button until it shuts down completely.įind the Command + Option + R keys. Specifically, this was after my computer restarted to install High Sierra, then froze midway, then once I powered off and on again, it became stuck on an endless reboot cycle, where it listed code saying something about ‘Kernel’ and ‘panic’. If you have a Time Capsule Backup this will also work for that. No Time Capsule Backup or USB drive required. I called Apple Support and they shared an easy fix with me. One user commented with this fix which seems to be working for some of the more recent updates causing the rebooting loops: I haven’t had this issue on High Sierra yet, so if this helps, please leave a comment confirming for everyone else.

I’ve been told this guide is helpful for both MacOS High Sierra 10.13 and Sierra. Updates for OSX High Sierra – January 2018 Updates for OSX High Sierra – January 2018.

Command r mac os high sierra