Appendix B. Troubleshooting
Whether it’s a car engine or an operating system, anything with several thousand parts can develop the occasional technical hiccup. OS X is far more resilient than its predecessors, but it’s still a complex system with the potential for occasional glitches.
Most freaky little glitches go away if you just try these two steps, one at a time:
Quit and restart the wayward program.
Log out and log back in again.
It’s the other problems that’ll drive you batty.
Minor Eccentric Behavior
All kinds of glitches may befall you, occasionally, in OS X. Your desktop picture doesn’t change when you change it in System Preferences. A menulet doesn’t open when you click it. A program won’t open—it just bounces in the Dock a couple of times and then stops.
When a single program is acting up like this, but quitting and restarting it does no good, try the following steps, in the following sequence.
First Resort: Repair Permissions
An amazing number of mysterious glitches arise because the permissions of either that item or something in your System folder—that is, the complex mesh of interconnected Unix permissions described in Chapter 14—have become muddled.
When something doesn’t seem to be working right, therefore, open your Applications→Utilities folder and open Disk Utility. Proceed as shown in Figure B-1.
This is a really, really great trick to know.
Get OS X Mountain Lion: The Missing Manual 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.
