PC Recovery with a built-in disk image. One creates an 'One' golden image, a user can instantly restore a system, and revert/undo any changes to a system with the 'One' image. Managing computers in labs, libraries, companies, and schools has become easy and simple. What makes ONE different from others is that it creates backup image on system drive; and a user can restore files, the whole system, and undo any un-wanted changes by simple 'reboot' the system.