Mac OS X Leopard features a nice built-in application called Time Machine. This app enables you to create reserve copies for all files and folders on your Mac, keeping the changes in sync. In such a way data on your disk will be protected from unintentional removal. To use Time Machine you should use an external hard drive as a backup target. Follow these steps to backup your files with Time Machine:
1. Connect an external hard drive to your Mac. The system should automatically detect it and suggest to use it as your backup destination, but if not, do the following:
a. From your Mac’s menu, select System Preferences.
b. Click the Time Machine icon.
c. Click Choose Backup Disk.
2. Time Machine will start the backup of all files on your Mac.
3. Finally, the app will inform you about the time of next backup. As a rule, Time Machine checks for changes every hour and automatically synchronizes them with the files on your backup drive.
Hint 1: The size of the backup target should be either the same or larger than the size of your Mac’s startup drive.
Hint 2: Try not to store other files (those you don’t backup) on your backup drive.
Thanks to Charles W. Robinson