Configure Time Machine Backups
One of the most crucial OS X maintenance chores is to configure your system to make regular backups of your files. Macs are reliable machines, but they can crash and all hard disks eventually die, so at some point your data will be at risk. To avoid losing that data forever, you need to configure the OS X Time Machine feature to perform regular backups.
To use Time Machine, your Mac requires a second hard disk. This can be a second internal disk on a Mac Pro or Mac mini, but on most Macs the easiest course is to connect an external hard disk, which you will learn about in this section.
Configure Time Machine Backups
Configure Backups Automatically
Connect an external USB, Thunderbolt, or FireWire hard disk to your ...
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