FORMATTING METHOD FOR MAGNETIC DISK AND MAGNETIC DISK

摘要

PROBLEM TO BE SOLVED: To prevent illicit use and erroneous use without alteration of a cartridge by a user and to make a contribution to downsizing and thickness reduction of a magnetic disk assembly. SOLUTION: A disk ID is added before a frame information region 10 index of a servo region 2 indices for indices in the formatting method of the removable magnetic disk 1 of a sector servo system in a servo system.