So, again, what is SYSPREP: technology that you can use with other deployment tools to install Windows® operating systems onto new hardware. The Sysprep tool 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, the Sysprep tool cleans up user-specific and computer-specific settings and data that must not be copied to a destination computer.
Basically it means, cleaning your installation and putting fresh ID’s
I use sysprep whenever I clone a VM so when I rebuild my lab, I will have a base Hard Disk image that is clean and when used in a differencing disk will make my life easier.
This is available waaaay back XP, in Windows 7 it is still available up till today on Windows 8. It must always be run from the %WINDIR%\system32\sysprep directory
Generalize and OOBE! Clean everything!
Wait for it to finish.
Will reboot automatically.
On reboot, you may experience a newly installed OS and we may need to fillup settings.
There, new and shiny install without installing. Using sysprep to clean user info.