Information recording medium, information recording medium accessing device, and area setting method

摘要

An information recording medium ( 110 ) contains a semiconductor memory ( 117 ) as a storage device for storing data and having plural areas ( 121 to 124 ) to be managed by mutually independent file systems, an area information storage section ( 119 ) for storing information about size and position of each area of the semiconductor memory ( 117 ), a host interface ( 111 ) for receiving a command for setting each area size of the semiconductor memory ( 117 ) from an accessing device ( 100 ), and an area size setting section ( 112, 120 ) for setting the size and position of each area of the semiconductor memory ( 117 ). The area size setting section ( 112, 120 ) sets the area size of each area ( 121 to 124 ) in the semiconductor memory ( 117 ) based on the specified setting condition according to the command received from the accessing device ( 100 ).