Patent ID: 7023640

Claim:
A disk drive comprising a base, a cover, a disk being formatted with embedded servo sectors, a rotary actuator, a head affixed to the rotary actuator for reading the servo sectors and for performing write operations to the disk, a sampled servo control system for processing the servo sectors read by the head to control motion of the rotary actuator, and a first sensor mounted on a nominally stationary portion of the disk drive, the first sensor adapted to detect acceleration disturbances of the disk drive, the disk drive further comprising: a dual-function subsystem having a first circuit adapted to provide a write-inhibit signal and a second circuit adapted to provide a feed-forward basis signal, the dual-function subsystem adapted to receive a first sensor signal from the first sensor and to provide (a) the write-inhibit signal based on the received first sensor signal and a first threshold value, and (b) the feed forward basis signal based on the received first sensor signal, wherein the first threshold value corresponds to a range of 6 to 10 Gs.