A disk drive has multiple disk surfaces and corresponding heads, each disk
surface includes multiple regions, and each head is for recording on and
playback of information from a corresponding disk surface. The data track
density in a first region on a first disk surface is different than the
data track density in a second region on a second disk surface, and the
first and second regions are radially similarly situated regions. A
method of sequentially accessing data in the first and second regions
includes sequentially accessing data tracks in the first region and then
sequentially accessing data tracks in the second region.