There are a few ways to back up a Mac. One way is to back up one Mac to another.
To do this, you will need an external hard drive and a FireWire cable.
First, connect the external hard drive to the Mac that you want to back up.
Next, open System Preferences and click on the Time Machine icon.
Make sure that the “Back Up Automatically” checkbox is selected and click on the “Options” button.
In the “Destination” tab, …
