Struct Chs 

pub struct Chs {
    pub cylinder: u16,
    pub head: u8,
    pub sector: u8,
}

Decoded CHS (Cylinder-Head-Sector) address.

Fields

cylinder: u16

head: u8

sector: u8

Implementations

impl Chs

pub fn from_bytes(b: [u8; 3]) -> Self

Decode a 3-byte MBR CHS field.

Byte layout (packed):

byte 0 = head
byte 1 = [cyl_hi(7:6) | sector(5:0)]
byte 2 = cyl_lo(7:0)

pub fn to_lba( self, heads_per_cylinder: u8, sectors_per_track: u8, ) -> Option<u32>

Convert to an approximate LBA (≤1023 cylinders, ≤255 heads, ≤63 sectors).

Returns None when CHS indicates “not used” (all zeros or all ones).

pub fn is_unused(self) -> bool

true when the CHS field is the all-zero “unused” convention.

LBA-only tooling routinely zeroes the CHS fields; this is never an inconsistency.

pub fn is_overflow_marker(self) -> bool

true when the CHS field is the maximum/overflow marker written when a partition’s start or end exceeds the CHS-addressable range.

The canonical encoding is FE FF FF (head 254, sector 63, cylinder 1023); some tools write FF FF FF (head 255). Both are accepted.

Trait Implementations

impl Clone for Chs

fn clone(&self) -> Chs

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Chs

impl Debug for Chs

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

Formats the value using the given formatter.

impl Eq for Chs

impl PartialEq for Chs

fn eq(&self, other: &Chs) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Chs