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Data (files and directories)Root DirectoryFAT 2FAT 1Reserved Area

Root directory

Table
|Graphic
DIR_FileSizeDIR_FstClusLODIR_WrtDateDIR_WrtTimeDIR_FstClusHIDIR_LstAccDateDIR_CrtDateDIR_CtrTimeDIR_CrtTimeTenthDIR_NTResDIR_AttrDIR_NameFAT16 DIR ContentΔoffsetsector = FirstRootDirSecNumFAT16 DIR N...FAT16 DIR 2FAT16 DIR 1FAT16 DIR 0

DIR Δoffset

fat16_directory struct size

FirstRootDirSecNum

BPB_ResvdSecCnt + (BPB_NumFATs * BPB_FATSz16)

The dot entry is a directory that points to itself.

The dotdot entry points to the starting cluster of the parent of this directory (which is 0 if this directories parent is the root directory).