Data check circuit of {TAIL ~ magnetic disk device} and data checking method of {HEAD ~ magnetic disk device} 
Data check circuit of { TAIL ~ magnetic disk device } and data checking method of { HEAD ~ magnetic disk device }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD