1. A method for booting a computing device to have a predefined functionality, said computing device having stored thereon a limited functionality operating system (OS) having an operating file system, said method comprising: booting the limited functionality OS; locating a characteristic file system with a predefined functionality; merging the characteristic file system into the operating file system; and implementing, by a processor, the limited functionality OS with the merged file system to cause the computing device to have the predefined functionality.