Patent ID: 8433888

Claim:
A network boot system wherein a network boot server which provides an operating system operating on a client terminal and a client terminal including a physical storage device are connected to each other over a network, the storage device including a read cache area; the client terminal including a physical memory configured to temporarily store data necessary during boot-up of the operating system and a network interface for accessing the server over the network, the operating system including a network driver for driving the network interface, a filter driver for converting access to a local bus of the client terminal into access to the network, and a read cache driver for driving the storage device, wherein the read cache driver is configured to receive a read request signal from the client terminal and then store data read by the filter driver to the read cache area as read cached data; and wherein the read cache driver is configured to receive a write request signal to the read cache area, whereby the physical memory is configured in response to store an indicator that the write request signal has been received, and whereby the read cache driver is configured to not use the read cached data of the read cache area.