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Want to test El Capitan but don’t wanna ruin your existing Yosemite setup? The following step by step tutorial will help you set your Mac in a way where both OS X El Capitan beta and Yosemite will be ...

When you buy a new hard drive, your first impulse may be to connect it to your Mac and start copying files to the new drive. But with all that new storage space it might make sense to partition the ...