Patent ID: 8468322

Claim:
An information processing apparatus using a plurality of file systems, comprising: a storage device managed by a first file system; a file forming unit configured to form one or a plurality of reservation files including a plurality of data blocks for assuring an area for a second file system in the storage device; an area construction information forming unit for the second file system configured to form construction information of the area for the second file system; a virtual logical block forming unit configured to form a virtual logical block address used by the second file system in order to designate data managed by the first file system in the storage device; a logical block address converting unit configured to convert the virtual logical block address formed by the virtual logical block forming unit into a logical block address in the first file system based on the construction information formed by the area construction information forming unit for the second file system; and a data accessing unit configured to access the plurality of data blocks included in the one or a plurality of reservation files based on the logical block address converted by the logical block address converting unit.