Method for controlling to keep off defects on magnetic disks

Details Method for controlling to keep off defects on magnetic disks Method for controlling to keep off defects on magnetic disks

1987-11-04

1989-02-14

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

360 27, 360 60, G11B 502, G11B 1702

Patent

active

048050482

ABSTRACT:
A method for controlling to keep off defects in a magnetic disk apparatus while has a plurality of magnetic disks and defect position information is recorded in each of tracks on each magnetic disk to keep off a defect in writing records in each track. Positional information about defects on all the tracks belonging to a cylinder of the magnetic disk apparatus is recorded in each of the tracks, and records are written in each of the tracks while keeping off the defects on the basis of the recorded positional information about the defects.

REFERENCES:
patent: 3689891 (1972-09-01), Kril
patent: 4420807 (1983-12-01), Nolta et al.
patent: 4507693 (1985-03-01), Matsuda et al.
patent: 4545044 (1985-10-01), Satoh et al.
patent: 4558446 (1985-12-01), Banba et al.
patent: 4631723 (1986-12-01), Rathbun et al.

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