To those skilled in the art, however, the present invention can be applied in {HEAD ~ any other form} of the disk drive, such as {TAIL ~ hard disk drives} 
To those skilled in the art , however , the present invention can be applied in { HEAD ~ any other form } of the disk drive , such as { TAIL ~ hard disk drives }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL