A couple of weeks ago, in preparation for updating to Sierra, I updated Clover through the program's own update system. That broke my system. I got up and running booting from a flash drive and, after a little work, mostly reinstalling Clover and copying over the Boot and Clover folder from my flash drive to my SSD EFI, I was able to boot again and things were good.
Then I used the App Store to update to Sierra. Because I didn't prepare properly, I broke things again, but was able to get up...
HELP—I got Sierra running and then it broke
Then I used the App Store to update to Sierra. Because I didn't prepare properly, I broke things again, but was able to get up...
HELP—I got Sierra running and then it broke