Information processing system, content recording/reproducing device, and information processing method

An information processing system for accessing a recording medium using an entry information array, the system comprising:

• an entry information search section, and
• a directory entry access section, wherein
• the recording medium includes a directory entry array including n directory entries, where n is an integer of two or more, belonging to a same directory,
• each of the n directory entries corresponds to a file or a subordinate directory entry array belonging to a subordinate directory, and includes
• name information indicating a name of the file or a name of the subordinate directory, and
• storage position information indicating storage position of the file or storage position of the subordinate directory entry array corresponding to the subordinate directory,
• the entry information array includes m pieces of entry information, where 1≦m≦n, corresponding to m directory entries of the n directory entries,
• each of the m pieces of entry information includes
• name information of a directory entry corresponding to the entry information, and
• allocation position information indicating allocation position of the directory entry corresponding to the entry information in the directory entry array, p1 the entry information search section detects entry information corresponding to a file or a directory, which is a search target, from the entry information array, and
• the directory entry access section refers to the allocation position information included in the entry information detected by the entry information search section to detect a directory entry corresponding to the search target from the directory entry array.