Patent ID: 6310741
Filing Date: 2001-10-30
Classification: G11B

Abstract:
A magnetic disk apparatus comprising:a magnetic disk medium having tracks arranged concentrically or spirally,a magnetic head for recording or reproducing for said tracks,detection means for detecting position information of said magnetic head in the direction of track width during recording,decision means for deciding the magnitude of a position error of said magnetic head in the direction of track width using said position information and a plurality of threshold values, andmeans for limiting the recording on a track according to a decision result by said decision means whereinwhen the off-track outbreaks and said magnitude of a position error is decided to be larger than the preset threshold value by said decision means at the time of the recording,the writing operation on said track is continued,the writing operation on the whole or a part of one track on both sides neighboring to said track is temporarily inhibited by said means for limiting the recording on a track.