During power up, {HEAD ~ the disc drive electronics} are configured to operate {TAIL ~ the motor} in a line to line configuration, thus assuring generation of adequate torque 
During power up , { HEAD ~ the disc drive electronics } are configured to operate { TAIL ~ the motor } in a line to line configuration , thus assuring generation of adequate torque
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH