Network, Computer and Programming Resources
Boot Sector and BPB Structure[Fat32]-> BPB_RootClus [Offset=44, Size=4]Boot Sector and BPB Structure[Fat32]-> BS_BootSig [Offset=66, Size=1]Boot Sector and BPB Structure[Fat32]-> BS_DrvNum [Offset=64, Size=1]Boot Sector and BPB Structure[Fat32]-> BS_FilSysType [Offset=82, Size=8]Boot Sector and BPB Structure[Fat32]-> BS_Reserved1 [Offset=65, Size=1]Boot Sector and BPB Structure[Fat32]-> BS_VolID [Offset=67, Size=4]Boot Sector and BPB Structure[Fat32]-> BS_VolLab [Offset=71, Size=11]Boot Sector and BPB Structure-> BPB_BytsPerSec [Offset=11, Size=2]Boot Sector and BPB Structure-> BPB_FATSz16 [Offset=22, Size=2]Boot Sector and BPB Structure-> BPB_HiddSec [Offset=28, Size=4]Boot Sector and BPB Structure-> BPB_Media [Offset=21, Size=1]Boot Sector and BPB Structure-> BPB_NumFATs [Offset=16, Size=1]
Fat32 - Boot Sector and BPB Structure-> BPB_HiddSec [Offset=28, Size=4]
Count of hidden sectors preceding the partition that contains this FAT volume. This field is generally only relevant for media visible on interrupt 0x13. This field should always be zero on media that are not partitioned. Exactly what value is appropriate is operating system specific.