The TGetDiskSerial is a VCL component. You can use it to read the serial number of hard disk easily. As we all know, this serial number is unique in the world. So this component is of great use, for example, you can use this serial number to create an machine id or encrypt number. Key Features: Easy to obtain the serial number of hard disk. Support reading several physics hard disks. Support Delphi 5, 6, 7, 2006, 2007 and Delphi 2009. Read more parameters, such as Model Number, Revision Number, Buffer Size, Cylinders, Heads, Sectors per track. No administrator rights required. Version 4.0 adds Windows Vista support.