US 7,589,925 B1
Method of accessing variable density data tracks in a disk drive
Jim Chiao, Saratoga, Calif. (US); Teddy Hadiono, San Jose, Calif. (US); Allen Cheng-wu Hu, Fremont, Calif. (US); Annie Mylang Le, San Jose, Calif. (US); Perry Neos, Milpitas, Calif. (US); Chad Schroter, Los Gatos, Calif. (US); Eric Wong, Fremont, Calif. (US); Yan Zang, San Jose, Calif. (US); and Charles W. Miller, San Jose, Calif. (US)
Assigned to Maxtor Corporation, Scotts Valley, Calif. (US)
Filed on Jun. 06, 2006, as Appl. No. 11/448,364.
Application 11/448364 is a continuation of application No. 10/340855, filed on Jan. 10, 2003.
Application 10/340855 is a continuation of application No. 10/053220, filed on Jan. 17, 2002, abandoned.
Int. Cl. G11B 5/09 (2006.01)
U.S. Cl. 360—48  [360/53; 360/75; 360/77.02; 360/78.04] 47 Claims
OG exemplary drawing
 
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.