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FileVault 2 can protect your drive’s data by encrypting the data on your drive. Is it worth using?
An administrator password only goes so far to protect your Mac, but what happens if someone circumvents it or boots from another volume? The contents of your Mac will be vulnerable — unless you encrypt it. Fortunately Apple enables just such technology with FileVault 2 encryption, and it’s built right into OS X Mavericks. Here’s how to enable FileVault 2 encryption on your Mac.
