<p>A method and apparatus allows multiple computer operating systems (OS) and/or personalities to run concurrently. An instant-on platform includes a resource management service, a caching service, a profile manager, a network stack which provides TCP/IP communication to the OS, and at least one appliance. The instant-on platform can be placed in the path of network and disk traffic between said user OS and actual system hardware. User selectable profiles and personalities are also provided.</p>
