Windows XP Professional has a built-in backup utility that can back up files to the local computer or to an external hard drive. If you have an external hard drive plugged into your computer, you can back up some or all of the files from your computer to the external drive.
Open the Backup Utility on your computer by pressing the "Start" button, clicking on "All Programs," selecting "Accessories," clicking "System Tools" and clicking "Backup."
Click the "Next" button and then select what type of backup you want to make. If you wish to back up all of the files on the computer (the recommended operation), select "All information on this computer" and then click the "Next" button.
Click the "Browse" button and then select your external hard drive. Click the "OK" button and then click the "Next" button.
Click on the "Finish" button to initiate the backup process.
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