公开(公告)号：JPH10134516A

公开(公告)日：1998-05-22

申请号：JP28386096

申请日：1996-10-25

Applicant: IBM

Inventor： SAITO TAKAHIRO ,  KIBASHI AKIRA ,  OKADA KENJI ,  OZEKI HIDENORI

IPC: G06F3/06 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18

Abstract: PROBLEM TO BE SOLVED: To minimize the reduction in a data transfer rate by arranging a spare sector at a position in a spare region located in each zone and is away from the disk center from the position of data in which a hardware error has been generated at least by a specific angle or more from the position of hard error being generated. SOLUTION: A zone 0 on a disk includes at least one spare track arranged at a center part in advance and a data region is divided into a data region 1 and a data region 2 by a spare track. When the zone 0 has a defective sector D, a spare track where a spare sector S is located is sought, the data of the spare sector S are read, and a track located at the next sector of the defective sector D is sought, thus reallocating the data of the sector D at the spare sector S at nearly the opposite side for the disk center in the spare track.