File management method and an information processing apparatus

The information recording medium of the data to the reading, recorded in the information processing apparatus to perform, providing the file system controller. Building a file system control information in a system memory within the information processing apparatus, the file system control unit controls to integrate a plurality of information recording media are managed by individual file systems into a single virtual file system . The file system control unit when the same name file exists, manages the priority indicating the information recording medium to be used preferentially. This priority can be changed in response to a request from the application program. This allows integrated management of a plurality of information recording media, and the application can access all files of the same name.