Disk drive for updating operating zone parameters with adapted zone parameters calibrated in the field

摘要

A disk drive is disclosed which calibrates at least one zone parameter in the field. During an off-line state of the disk drive, at least one of the adapted zone parameters is calibrated. During an active state of the disk drive, a read error is detected and a data-recovery firmware procedure is executed using adapted zone parameters in an attempt to recover data associated with the read error. If the data is successfully recovered from the data sector using the data-recovery firmware procedure, an adapted zone parameter counter is incremented and the operating zone parameters are updated with the adapted zone parameters if the adapted zone parameter counter exceeds a predetermined threshold.