A first data recorded region is formed in one of {HEAD ~ multiple recording layers} of a rewritable optical disc before {TAIL ~ a second data recorded region} is formed therein 
A first data recorded region is formed in one of { HEAD ~ multiple recording layers } of a rewritable optical disc before { TAIL ~ a second data recorded region } is formed therein
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH