FAT directory entries

• A basic FAT directory entry contains:

• • • 8 character BASE filename
    • 3 character file extension
    • 1 byte attribute with RO, System, Hidden etc
    • 4 byte date and time information
    • 2 bytes (16-bit) cluster-number for FIRST cluster
    • 4 bytes (32-bit) filesize, maximum value 2 Gb

• OS/2, FAT32 and VFAT may add:

• • • 2 bytes index value to OS2 extended-attributes
    • 2 bytes extra cluster number, making it 32-bit
    • Extra create/access date and time fields (VFAT)