Patent Number: 8,797,669

Title: Disk drive executing rotational position optimization (RPO) algorithm to facilitate a read-modify-write operation

Abstract: A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of data tracks, wherein each data track comprises a plurality of data sectors. A host write command is received from a host, and previous data is read from at least one data sector which is combined with at least one of the host blocks to generate modified data that is written to the at least one data sector. At least one of a first read command and a first write command is generated, wherein the first read command is for reading the previous data from and the first write command is for writing the modified data to the at least one data sector. At least one of the first read command and the first write command is stored in a command queue for execution based on a rotational position optimization (RPO) algorithm.

Inventors: Burton; Scott E. (Westminster, CO)

Assignee: Western Digital Technologies, Inc.

International Classification: G11B 5/02 (20060101)

Expiration Date: 8/05/12018