In {TAIL ~ addition}, the method includes re injecting low density gas from a hole penetrating the hermetically sealed disk enclosure from an exterior of the disk drive to {HEAD ~ an interior} of the disk drive 
In { TAIL ~ addition } , the method includes re injecting low density gas from a hole penetrating the hermetically sealed disk enclosure from an exterior of the disk drive to { HEAD ~ an interior } of the disk drive
OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH