Pointers
BPB
旼컴컴컴컴컴컴컴컴컴컫컴컴컴쩡컴컴컫컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커�Field Name �Offset�Length�Type�Description � 쳐컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿍PSECSZ �0 �2 쿥 쿞ize in bytes of physical sector � 쳐컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿍PCLUS �2 �1 쿍 쿞ectors/Alloc unit � 쳐컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿍PRES �3 �2 쿥 쿙umber of reserved sectors � 쳐컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿍PFTCNT �5 �1 쿍 쿙umber of FATs � 쳐컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿍PRDCNT �6 �2 쿥 쿙umber of directory entries � 쳐컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿍PSCCNT �8 �2 쿥 쿟otal number of sectors � 쳐컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿍PMEDIA 쿪 �1 쿍 쿘edia descriptor byte � 쳐컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿍PFTSEC 쿫 �2 쿥 쿙umber of sectors taken up by one FAT � 쳐컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿍PBSecPerTrack 쿭 �2 쿥 퀂ectors per track � 쳐컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿍PBcHeads 쿯 �2 쿥 쿻umber of heads � 쳐컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿍PBcSecHidden �11 �2 쿥 쿻umber of hidden sectors before the � � � � � 퀁eserved sectors � 쳐컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿍PBcSecHiddenH �13 �2 쿥 쿓igh word of hidden sectors � 쳐컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿍PBcSecTotal �15 �4 쿏 쿍ig total sectors (if BPSCCNT = 0) � 쳐컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿛HYDRV �19 �1 쿍 쿛HYSICAL DRIVE NUMBER (0 OR 80H) � 쳐컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿎URHD �1a �1 쿍 쿢nitialized � 읕컴컴컴컴컴컴컴컴컴컨컴컴컴좔컴컴컨컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸