Patent ID: 8885284

Claim:
An information write apparatus comprising: a write head configured to write a track on a magnetic disk by a shingled write recording format; a read head configured to read a read signal from the track; a target position calculation module configured to calculate a write target position of the track based on a pitch between the track and a track adjacent to the track; a head position calculation module configured to calculate a position of the write head based on a servo read signal in the read signal; a positioning error calculation module configured to calculate a positioning error for each sector of the track based on the write target position and the position of the write head; a memory configured to store the calculated positioning error for each sector; a correction module configured to, when writing a predetermined track, integrate the positioning error of each sector written before the predetermined track is written, and correct a write target position of the predetermined track based on the integrated positioning error of each sector; and a control module configured to control the position of the write head based on the corrected write target position of the predetermined track, when writing the predetermined track.