Patent ID: 7589925
Filing Date: 2009-09-15
Classification: G11B

Abstract:
1. In a disk drive that includes first and second disk surfaces and first and second heads, wherein the first disk surface includes a first region, the second disk surface includes a second region, the first region includes first data tracks and first servo tracks, the second region includes second data tracks and second servo tracks, the first data tracks have a first radial data track density, the second data tracks have a second radial data track density, the first radial data track density is different than the second radial data track density, the first and second regions are radially similarly situated at essentially the same radial locations, the first head reads from and writes to the first disk surface, and the second head reads from and writes to the second disk surface, a method of sequentially accessing data in the first and second regions, comprising: sequentially accessing multiple first data tracks; and then sequentially accessing multiple second data tracks, wherein the multiple first data tracks are a subset of the first data tracks, the multiple second data tracks are a subset of the second data tracks, and the subsets of the first and second data tracks are radially similarly situated at essentially the same radial locations.