Diagnose Mac Boot Problems with Howard Oakley’s Diagram

Originally published at: https://tidbits.com/2018/11/15/diagnose-mac-boot-problems-with-howard-oakleys-diagram/

If you’re racking your brain trying to figure out all the reasons why a Mac isn’t booting, Howard Oakley has developed a diagram that reminds you of all the boot steps, problems that can occur at each one, and possible solutions.