Chapter 20

Troubleshooting OS X

In This Chapter

arrow Facing the ol’ “My Mac Won’t Boot” blues

arrow Dealing with the prohibitory sign

arrow Recovering from startup crashes

image

As a bleeding-edge Mac enthusiast and consultant with more than a quarter century of Mac experience, I’ve seen more than my share of Mac troubles. Over those years, I’ve developed an arsenal of mostly surefire tips and tricks that I believe can 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 because it is now 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 fighting 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 not. You may instead see a solid blue screen, a solid gray screen, a solid black screen, or something else entirely, as described in the next section. ...

Get OS X El Capitan For Dummies now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.