Western Digital Technologies, Inc.

John Edward Lauber

Horia Cristian Simionescu

Michael Stephen Rothberg

Gregory B Thelin

Eric L Severtson

A disk drive is disclosed for executing a preemptive multitasking operating system comprising tasks of varying priority, including a disk task for processing disk commands by initiating seek operations and configuring parameters of a read/write channel, a host task for initiating disk commands in response to host commands received from a host computer, a background task for initiating disk commands to perform background operations including a defect scan of the disk, and an execution task for arbitrating the disk commands generated by the host task and the background task and for transmitting the arbitrated disk commands to the disk task.

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Pleasanton, CA, United States of America

John Edward Lauber