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    Length: 1005 (0x3ed)
    Types: TextFile
    Notes: UNIX file
    Names: »disk.5«

└─⟦26887b7e0⟧ Bits:30009717 Comet 32 harddisk image
    └─⟦28c352965⟧ »/a« UNIX Filesystem
        └─⟦this⟧ »usr/man/man5/disk.5« 

TextFile

.ig
	@(#)disk.5
	@(#)Copyright (C) 1985 by...
..
.TH DISK 5 
.SH NAME
disk \- format of a disk header
.SH SYNOPSIS
.B
#include <sys/disk.h>
.SH DESCRIPTION
Each disk has a 100 sector header (one sector = 512 bytes).
The include file
.I disk.h
describes the partition table that normally exists
at sector 10.
The disk driver reads the table at boot time
and configures itself accordingly.
The table is initially created at system generation time using
.IR mkpt (8)
(see also
.IR sysgen (8)),
and can also be re\-defined for an existing genix system.
The root and swap areas must be
.I dc1a
and
.I dc1b
in any configuration, and
.I dc1c
must map the entire disk, including the header.
.LP
Also in the header at sector 30 is a copy of the boot program.
This is the same program as on the boot diskette, except that it
may go directly multi\-user without asking questions.
The monitor uses this boot program to provide an "autoboot"
feature on the system.
.SH "SEE ALSO"
wd(4), wdutest(8), mkpt(8), sysgen(8)