Internet Recovery uses an available Internet connection to boot your Mac from Apple's servers and run the same set of recovery tools as if you had access to them locally, including the downloading and re-installation of the operating system. If you can't get access to your recovery partition, which may be the case if your issues lie with your hard drive, machines that shipped with Lion or above (or those that have been updated with a patch that brings Internet Recovery compatibility) have another built-in service, Internet Recovery. It includes all the tools you need for restoring your Mac from a backup, finding help on the Internet, modifying drives and even reinstalling the entire OS. The recovery partition eliminates the need for physical restoration material (such as the traditional DVD most older Macs shipped with, or the USB drive that was available to purchase around the launch of Lion). This partition, Recovery HD, lives in the shadows of your Mac's hard drive, invisible even to Disk Utility, and only ever comes to life when you need it. Your Mac has a built-in set of tools that form the Recovery System services which reside on a special partition of your primary hard drive that OS X set up during installation.

In this tutorial, I'll show you through the various options for restoring or recovering your Mac and the process of bringing your Mac back to a clean, healthy state. There may be a time, in the life of your Mac, where you need to restore or recovery your machine, either to try and solve problems you've encountered or simply clean house and start from fresh.

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