Struct MasterBootRecord 

#[repr(C, packed(1))]
pub struct MasterBootRecord {
    pub bootstrap: [u8; 446],
    pub partition_table: MbrPartitionTable,
    pub signature: [u8; 2],
}

The complete Master Boot Record structure (512 bytes).

@hadris-spec MBR:layout @hadris-compliance unknown @hadris-tests roundtrip::mbr_write_read_roundtrip

Fields

bootstrap: [u8; 446]

Bootstrap code area (446 bytes).

partition_table: MbrPartitionTable

Partition table (64 bytes - 4 entries of 16 bytes each).

signature: [u8; 2]

Boot signature (must be 0x55, 0xAA).

Implementations

impl MasterBootRecord

pub const SIGNATURE: [u8; 2]

The required boot signature bytes.

pub const fn new(partition_table: MbrPartitionTable) -> Self

Creates a new MBR with the given partition table.

pub const fn protective(disk_sectors: u64) -> Self

Creates a protective MBR for GPT disks.

pub const fn has_valid_signature(&self) -> bool

Returns whether this MBR has a valid boot signature.

pub fn get_partition_table(&self) -> MbrPartitionTable

Returns a copy of the partition table.

This method exists because the struct is packed and direct field access would create a misaligned reference.

pub fn set_partition_table(&mut self, table: MbrPartitionTable)

Sets the partition table.

This method exists because the struct is packed and direct field access would create a misaligned reference.

pub fn with_partition_table<F>(&mut self, f: F)

where F: FnOnce(&mut MbrPartitionTable),

Modifies the partition table using a closure.

This is a convenience method that gets the partition table, allows modification via a closure, and sets it back.

pub fn is_valid(&self) -> bool

Returns whether this MBR is valid (has correct signature and valid partition table).

Trait Implementations

impl Clone for MasterBootRecord

fn clone(&self) -> MasterBootRecord

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for MasterBootRecord

impl Debug for MasterBootRecord

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

Formats the value using the given formatter.

impl Default for MasterBootRecord

fn default() -> Self

Returns the “default value” for a type.

impl MasterBootRecordReadExt for MasterBootRecord

Available on crate features read and sync only.

fn read_from<R: Read>(reader: &mut R) -> Result<Self>

Reads an MBR from the beginning of a reader.

impl MasterBootRecordReadExt for MasterBootRecord

Available on crate features async and read only.

async fn read_from<R: Read>(reader: &mut R) -> Result<Self>

Reads an MBR from the beginning of a reader.

impl MasterBootRecordWriteExt for MasterBootRecord

Available on crate features sync and write only.

fn write_to<W: Write>(&self, writer: &mut W) -> Result<()>

Writes this MBR to a writer.

impl MasterBootRecordWriteExt for MasterBootRecord

Available on crate features async and write only.

async fn write_to<W: Write>(&self, writer: &mut W) -> Result<()>

Writes this MBR to a writer.

impl Pod for MasterBootRecord

impl Zeroable for MasterBootRecord

fn zeroed() -> Self

Calls zeroed.