These programs are available for download from the Internet. But changing the serial numbers requires knowledge of the Windows system.įor those who are not experts in the field of Windows, a simple solution is to use Windows based software that does the job of altering the hard disk serial numbers. By resetting or changing the hard disk serial numbers, you can avoid these software conflicts. For this reason, the serial-number is assigned to each hard disk based on its size, serial-numbers, and model. This serial number is also used by various software programs installed in the machine to identify the hard drive and prevent multiple installations of the same program on different machines. A hard disk is assigned a serial number when you format a new hard drive with Windows.