On personal computers (PCs), ghost imaging is used to back up everything on the hard disk, often while reinstalling an operating system (OSoperating system (OSAn operating system (OS) is system software that manages computer hardware, software resources, and provides common services for computer programs.
› wiki › Operating_systemOperating system - Wikipedia). The purpose of the ghost image is to allow the cloning of the system onto other systems, or to enable a quick restore of a system.