Chapter 26
Troubleshooting macOS
IN THIS CHAPTER
Facing the ol’ “My Mac Won’t Boot” blues
Dealing with the prohibitory sign
Recovering from startup crashes
Using Big Sur’s Optimize Storage
As a bleeding-edge Mac enthusiast and consultant with more than three decades of Mac troubleshooting experience, I’ve seen (and resolved) more than my share of Mac troubles. Over those years, I’ve developed an arsenal of mostly surefire tips and tricks that I believe will help you resolve more than 90 percent of Mac issues without a trip to the repair shop.
Alas, if your hardware is dead, then, sadly, neither you nor I can do anything about it — that’s a job for your friendly Mac repairman and your fat checkbook or high-limit credit card. But if your hardware is okay, you have a darn good chance of using the suggestions in this chapter to get your machine up and running.
About Startup Disks and Booting
Although you usually see a stylish Apple logo when you turn on your computer, once in a blue moon, you may instead see a solid blue screen, a solid gray screen, a solid black screen, or something ...
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