How to Automatically Back Up a Portable Hard Drive

1). Connect the portable hard drive to your computer. These drives usually use a USB, firewire or eSata connection. Check the documentation for your drive if you are not sure which connection type should be used.
2). Connect the power cable to the drive and power on the portable hard drive. It should be detected by the computer after a few seconds.
3). Click on the "Start" menu on your computer. Open "Control Panel."
4). Click "System and Security" and choose "Backup and Restore." Click the "Set up Backup" link in the upper right.
5). Select the location where files on the portable hard drive are to be backed up. Use drive C:, which normally contains Windows. Click "Next."
6). Click "Let me choose" in the open window. Specify that you want to back up the portable drive instead of the computer's main drive. Click "Next."
7). From the list of files under "Computer," scroll down until you see the portable hard drive. Select the check box next to the name of the drive to back up all files on the drive.
8). Uncheck the box next to any files on the drive you do not want to back up from the list of files under the name of the drive. Click "Next."
9). Click "Change Schedule" to select a day and time to perform the backup on an interval. This should be a time when you are not using the computer, but when you leave it on.
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Press "OK" and choose "Save settings and backup." Your portable hard drive is now backed up on the interval that you just set. A backup is also created now.