I started the day by receiving the following message, spontaneously:
your computer restarted because of a problem. Press a key or wait a few minutes to continue starting up.
So I upgraded High Sierra. But the problem continued, I kept getting the message above.
So I uninstalled all my apps which came from outside the Apple store. Throughout this process, the problem continued.
Finally, I thought I might as well just reinstall everything. After all, everything I have is in one cloud or another anyway. I started the computer in recovery mode and just wiped the main drive. Easy! And very possibly stupid.
When I went to install High Sierra again, I got the error, though I tried twice in a row.
could not create reboot volume ...
Yikes. So I started her up again, CMD R, and a little globe starts spinning. Eventually, I am given the option to install OS X Yosemite. Ok, fine, better than nothing.... but then when it says select the disk you want, there are no options... just the external USB drive...
When I go to disk utility, I see “500.28 GB APPLE SSD...” with a little grey “disk0s2” beneath it.
What should I do now? I feel WAAAY over my head here...