Patent ID: 7486459
Filing Date: 2009-02-03
Classification: G11B,Y10T

Abstract:
1. A disk drive comprising: a drive housing; a storage disk that is rotatably coupled to the drive housing; a slider assembly positioned near the storage disk, the slider assembly including a head that interacts with the storage disk during a data transfer operation and a slider mover that moves the head between a first HtD spacing and a second HtD spacing, which is different than the first HtD spacing; and drive circuitry that performs a performance test on the head at the first HtD spacing and at the second HtD spacing, wherein the performance test includes testing how accurately the head reads data at the first HtD spacing and the second HtD spacing and wherein the slider mover maintains the head at the first HtD spacing during a read operation if the results of the performance test is a first test result and the slider mover maintains the head at the second HtD spacing during the read operation if the results of the performance test is a second test result.