help-install/nb/main::opt::o_apm.html


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package partition_table_dos;

use diagnostics;
use strict;
use vars qw(@ISA);

@ISA = qw(partition_table_raw);

use common qw(:common :system :file);
use partition_table_raw;
use partition_table;
use c;

my @fields = qw(active start_head start_sec start_cyl type end_head end_sec end_cyl start size);
my $format = "C8 I2";
my $magic = "\x55\xAA";
my $nb_primary = 4;

my $offset = $common::SECTORSIZE - length($magic) - $nb_primary * common::psizeof($format);

sub hasExtended { 1 }

sub compute_CHS($$) {
    my ($hd, $e) = @_;
    my @l = qw(cyl head sec);
    @$e{map { "start_$_" } @l} = $e->{start} || $e->{type} ? CHS2rawCHS(sector2CHS($hd, $e->{start})) : (0,0,0);
    @$e{map { "end_$_"   } @l} = $e->{start} || $e->{type} ? CHS2rawCHS(sector2CHS($hd, $e->{start} + $e->{size} - 1)) : (0,0,0);
    1;
}

sub CHS2rawCHS($$$) {