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