Information system using designating areas for retrieving/converting data and directories of different formats storing in optical and magnetic storage

摘要

Data and directories are separated and stored on separate parts of an optical disk. Data and directories are written from magnetic disk storage in a first specific format that is determined by a particular operating system used by an information processor. Directories are on the inner tracks and data are on the outer tracks, in a second format on the optical disk. A medical information processing system is provided with an external magnetic disk storage and the optical disk.