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FAT 32 - Boot Record (Volume Boot Record)

Offset Length (Bytes) Description
 0x00 3 Jump Code
 0x03 8 OEM Name/Id. (Usually "MSWIN4.1")
 0x0B 2 Bytes Per Sector
 0x0D 1 Sectors Per Cluster
 0x0E 2 Reserved Sectors
 0x10 1 No. of FAT copies
 0x11 2 Max. Number of Root Directory Entries (N/A for FAT32)
 0x13 2 Total Number of Sectors
 0x15 1 Description of Media (For hard drives, it is 0xF8)
 0x16 2 Total Sector Count
 0x18 2 Sectors Per Track
 0x1A 2 Number of Heads
 0x1C 4 Total No. of Hidden Sectors in the Partition
 0x20 4 Total Sector Count
 0x24 4 No. of Sectors per FAT
 0x28 2 Flags (Bit 0-4: Active FAT copy; Bit 7: Fat Mirroring Enabled or Disabled)
 0x2A 2 FAT Version (Low Byte: Minor ver; High Byte: Major ver.)
 0x2C 4 Cluster No. of the Start of the Root Directory
 0x30 2 Sector No. of the File System Information Sector
 0x32 4 Backup Boot Sector No.
 0x34 12 Reserved
 0x40 1 Partition Drive No.
 0x41 1 Reserved
 0x42 1 Extended Boot Signature
 0x43 4 Volume Serial No.
 0x47 4 Volume Name
 0x52 8 Fat Name (In this case, FAT32)
 0x5A 420 Executable Code
 0x1FE 2 Boot Record Signature