Struct Bpb 

struct Bpb {
    bytes_per_sector: u16,
    sectors_per_cluster: u8,
    reserved_sectors: u16,
    num_fats: u8,
    sectors_per_fat_32: u32,
    root_cluster: u32,
    total_sectors_32: u32,
}

Fields

bytes_per_sector: u16

sectors_per_cluster: u8

reserved_sectors: u16

num_fats: u8

sectors_per_fat_32: u32

root_cluster: u32

total_sectors_32: u32

Implementations

impl Bpb

fn from_bytes(buf: &[u8; 512]) -> Option<Self>

Parse a BPB from a 512-byte boot sector buffer.

Validates:

• Boot signature 0x55AA at offset 0x1FE
• FAT32 signature “FAT32 “ at offset 0x52
• Non-zero bytes_per_sector and sectors_per_cluster
• bytes_per_sector is 512 (only 512 supported)

fn bytes_per_cluster(&self) -> u32

fn fat_start_sector(&self) -> u32

fn data_start_sector(&self) -> u32

fn cluster_to_lba(&self, cluster: u32) -> Option<u32>

Convert a cluster number to the LBA of its first sector. Returns None if the cluster number is invalid.

fn max_cluster(&self) -> u32

Maximum valid cluster id for this volume.

Trait Implementations

impl Clone for Bpb

fn clone(&self) -> Bpb

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Bpb

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.