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OS X Mavericks Pocket Guide by Jeff Carlson

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9. Back Up Your Data

I considered titling this chapter “MAKE BACKUPS!!” but didn’t want to give my copyeditor a heart attack. Even without the all-caps and double exclamation points, I can’t overstress the importance of setting up a good backup system.

If you think backups are merely a fine idea, and maybe you plan to copy a file or two to a CD once in awhile, let me propose this situation: You’re sitting in front of your Mac, looking through your digital photos of when your kids were babies, or when you took that once-in-a-lifetime vacation. Then you start to hear a clicking noise, followed by your computer abruptly shutting down. When you restart it, the clicking noise has returned but nothing else.

Congratulations! Your hard disk has just ...

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