A data processing system including a data storage device having {HEAD ~ data} stored on {TAIL ~ a data storage} medium 
A data processing system including a data storage device having { HEAD ~ data } stored on { TAIL ~ a data storage } medium
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH