Seagate Technology Incorporated

Piengphen Swangsmutchai

Sandeep Bhushan

Phillip Kevin McGinnis

Lewis Scott Kessinger Patterson

A method for calibrating a hard drive having a heat-assisted magnetic recording head is provided. The method includes performing, across an increasing temperature ramp, a first set of write/read operations using the head, performing, across a decreasing temperature ramp, a second set of write/read operations using the head, generating performance data associated with the head based on the first set of write/read operations and the second set of write/read operations, calculating a comparison value based on the performance data associated with the head and performance data associated with a plurality of heads, and adjusting an operating parameter value of the head based on the comparison value exceeding a threshold, the adjusted operating parameter reducing a likelihood that a laser of the head will exhibit write instability.

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Longmont, CO, United States of America

Piengphen Swangsmutchai