Disk serial number changer2/16/2023 ![]() The most relevant part to look at was the boot sector format of each of the different file systems. ![]() Knowing that the serial number is stored in the hard drive, I started looking up information about the three different file systems: FAT, FAT32, NTFS. It is worthwhile noting that the serial number returned by the "dir" command or the GetVolumeInformation() API is not the hardware serial number that comes from the manufacturer, instead this serial number is assigned and stored in the hard drive (mostly in the boot sector) by the file system and *can* be changed by software. Usually, the serial number of a drive is generated every time you format your hard drive and there is no documented way to change it afterwards. The article also comes with a handy dialog based application that allows you change the serial number visually. The article's source code files come with a home made DiskSector read/write class for WinNt/2k/XP and Win9x system. ![]() This article will demonstrate how to change the drive's serial number on three different file systems: FAT, FAT32 and NTFS.
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