The method includes closing an opened session by closing all opened sequential recording units of {HEAD ~ the opened session}, opening a new session having a new sequential recording unit, and recording session start information on {TAIL ~ the recording medium} 
The method includes closing an opened session by closing all opened sequential recording units of { HEAD ~ the opened session } , opening a new session having a new sequential recording unit , and recording session start information on { TAIL ~ the recording medium }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL