Clean Up Your Mac
Over time, most computers accumulate clutter, including outdated software, forgotten downloads, and obsolete files. Not only can this clutter make files harder to find, it can also cause problems when you upgrade to High Sierra—incompatibilities may show up, or you may run out of disk space, for example.
In this chapter, I suggest that you install some software updates and delete files you don’t need anymore. I also show you how to check both your RAM and your disk for errors that could cause problems when installing or running High Sierra.
Because you’ll be making so many changes, you should first make a complete backup—so if you skipped Back Up Your Disk, go back and follow those steps now. After you’ve cleaned up your Mac, ...
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