Patent ID: 8009376
Filing Date: 2011-08-30
Classification: G11B

Abstract:
1. A method for determining data track formats on multiple recording surfaces for addresses designated by a host in a disk drive device comprising: determining a data track pitch for each data track on each of the multiple recording surfaces; generating a plurality of bands on each of the multiple recording surfaces, each band of said plurality of bands consisting of a number of data tracks wherein a band end for each of said plurality of bands is determined by reference to a servo track and not determined by the number of data tracks included in each said band; adjusting the number of data tracks in each of said plurality of bands by reference to the band end for each of said plurality of bands; registering a data track including a greater number of errors than a reference number as a non-use data track to be skipped in data accesses; and determining data track formats so that addresses designated by a host continues from each band end to a corresponding band end on another recording surface, while addresses designated by the host are continuous in each band, wherein a number of servo tracks of movement in a head switch at each band end among the multiple recording surfaces is no more than one.