STORAGE DEVICE AND SERVO INFORMATION WRITING METHOD

摘要

A memory and servo information recording method are provided to control the location of a head based on cylinder information and a mark pattern by acquiring the cylinder information and the mark pattern from servo information recorded in the storage medium. A memory comprises: a storage medium in which servo information is overlapped and recorded with a first servo writing processing and a second servo writing processing in a predetermined cylinder vicinity; a head(12) reading out the information recorded in the storage medium; and a head location control part(61) reading out servo information recorded in the storage medium and controlling the location of the head by using the servo information reads out.