INFORMATION STORAGE MEDIUM HAVING PLURAL DATA STORAGE UNITS, A DATA RECORDING AND/OR DATA REPRODUCING DEVICE AND A METHOD THEREOF, SPECIFICALLY RELATED TO BEING CAPABLE OF RECORDING MORE USER DATA, AND REALIZING MINIATURIZATION TO BE USED AS AN INFORMATION STORAGE MEDIUM OF A PORTABLE ELECTRONIC DEVICE

摘要

PURPOSE: An information storage medium having plural data storage units, a data recording and/or data reproducing device and a method thereof are provided to record more user data by comprising plural data storage units, and to use the data storage units having high data reliability, thereby improving reliability on recorded data. CONSTITUTION: An optical data storage unit(13) records user data. A memory chip(15) records data related to a function provided in association with using the optical data storage unit(13). The data to be recorded in the memory chip(15) is related to a selective function provided in relation to using the optical data storage unit(13). The optical data storage unit(13) is either an optical disk, a magnetic tape, or a magnetic disk. The data to be recorded in the memory chip(15) is more than one of data related to optical disk properties, defect management data, and data related to a data recording and/or reproducing device.