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Backing Up Everything on Your Hard Drive

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Incremental Backup Tool - TimeMachine: 

 At the very least, you should use TimeMachine. It comes installed with every current copy of OS X. If you are running OS 10.5 or later, you already have it. Use it. Here's how:

  •  Buy an external hard drive at least 1.5x the size of your system's hard drive.

  • Plug it in.
  • When TimeMachine asks if you wish to use this new drive for backups, answer "yes".
  • If this doesn't happen, you may have to go into your System Preferences and turn TimeMachine on.
  • Depending on how the drive was shipped, you may need to format it using the Disk Utility program before OS X will recognize it.
  • Whenever your computer is at home, plug it into your external hard drive and turn it on.                                                                                                                                                       

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That's it! From then on, as long as you regularly plug your external drive into your Mac, TimeMachine will automatically keep a running history of your entire system. If your computer's main drive fails,

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you can use TimeMachine to restore anything and everything to a new drive.

System Cloning Tools: 

There are a large number of commercial products that are capable of cloning Windows system drives, and they can range from somewhat inexpensive to bank-breaking. A program called Drive SnapShot, however, is relatively cheap (with a generous trial period), very fast, and pretty easy to use. Windows 7 also has a decent built-in backup system that can make a copy of your files on an external hard drive.

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