power off preserving means for powering off the system after transferring {HEAD ~ the data} held in {TAIL ~ the first storing means} to the hard disk 
held in
power off preserving means for powering off the system after transferring { HEAD ~ the data } held in { TAIL ~ the first storing means } to the hard disk
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH