A method of viral installation of operating systems in a network includes determining a target group of computers at a master computer, installing an operating system image, the operating system image including a viral installation controller, from the master computer to the target group based on the target group determination, determining a first associated group of computers at least one target group computer, and installing the operating system image and viral installation controller on the first associated group from the target group based on the first associated group determination. A computer readable medium including computer readable code is also disclosed.