Sysprep Technical Reference
The System Preparation (Sysprep) tool is a technology that you can use with other deployment tools to install Windows operating systems onto new hardware. Sysprep prepares a computer for disk imaging or delivery to a customer by configuring the computer to create a new computer security identifier (SID) when the computer is restarted. In addition, Sysprep cleans up user- and computer-specific settings and data that must not be copied to a destination computer.