182 lines
5.8 KiB
Groff
182 lines
5.8 KiB
Groff
.\" $NetBSD: installboot.8,v 1.12 2004/03/09 20:29:05 wiz Exp $
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.\"
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.\" Copyright (c) 1996 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Paul Kranenburg.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd March 9, 2004
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.Dt INSTALLBOOT 8 atari
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.Os
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.Sh NAME
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.Nm installboot
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.Nd install a bootstrap on an FFS filesystem partition
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.Sh SYNOPSIS
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.Nm /usr/mdec/installboot
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.Op Fl Nmtuv
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.Ar device
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.Sh DESCRIPTION
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.Nm
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prepares the
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.Pq physically
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first partition on a device for boot-strapping from the TOS-ROM.
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The bootstrap is written into the bootblock area on the partition, right
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in front of the disk pack label, and hence limited in size to
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.Dv LABELOFFSET
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bytes.
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A disk pack label should be created
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.Po
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see
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.Xr disklabel 8
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.Pc
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before installing the bootstrap.
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.Pp
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The bootstrap is split into three parts: a small first-stage program
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that resides in the
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.Pq physically
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first 512 bytes on the device
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.Pq as specified by Atari Corp. ,
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a second-stage program that immediately follows the first-stage
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program, and a third-stage program that resides on the root filesystem.
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The first-stage program is loaded into memory by the ROM.
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After receiving control, it loads the second-stage program and the
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disk label.
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The second-stage boot program uses the stand-alone
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filesystem code in
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.Dq libsa.a
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to load the third-stage boot program from the root-filesystem on the device.
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The third-stage boot program then loads the kernel.
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The prototype code for the first-stage boot program can be found in
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.Pa /usr/mdec/std/fdboot
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.Pq floppy disk code ,
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.Pa /usr/mdec/std/sdboot
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.Pq SCSI disk code
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and
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.Pa /usr/mdec/std/wdboot
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.Pq IDE disk code .
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The second-stage boot program is stored in
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.Pa /usr/mdec/std/bootxx .
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and the third-stage boot program is stored in
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.Pa /usr/mdec/std/boot.atari .
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The boot code for Milan machines is different from the other machines and
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the files for the Milan can be found in the directory
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.Pa /usr/mdec/milan .
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Note that the Milan uses the SCSI disk code for both SCSI and IDE disks.
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.Pp
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For backwards compatibility with the vendor specific AHDI disk
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label, a\ special first-stage boot program is provided in
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.Pa /usr/mdec/std/xxboot.ahdi .
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Together with the general second-stage boot program, it is installed
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in the AHDI partition where the
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.Nx
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disk label lives.
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Furthermore,
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the AHDI specifications require an additional bootstrap, which is
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written into the AHDI root sector
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.Pq disk block zero .
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The prototype code for this AHDI compliant bootstrap can be found in
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.Pa /usr/mdec/std/sdb00t.ahdi
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and
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.Pa /usr/mdec/std/wdb00t.ahdi ,
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or the equivalents in
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.Pa /usr/mdec/milan .
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.Pp
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Perform the following steps to make a file system bootable:
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.Bl -enum
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.It
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Copy the secondary bootstrap (either
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.Pa /usr/mdec/std/boot.atari
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or
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.Pa /usr/mdec/milan/boot.atari )
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to the root directory of the target file system.
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.It
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Use
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.Nm
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to install the primary and secondary bootstrap programs
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(from
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.Pa /usr/mdec/std
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or
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.Pa /usr/mdec/milan )
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into the
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.Ar filesystem .
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.El
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.Pp
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The options are as follows:
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.Bl -tag -width flag
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.It Fl N
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Do not actually write anything on the disk.
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.It Fl m
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Use Milan boot code.
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.It Fl t
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Number of tracks per cylinder (IDE disk).
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.It Fl u
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Number of sectors per track (IDE disk).
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.It Fl v
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Verbose mode.
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.El
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.Pp
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The arguments are:
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.Bl -tag -width device
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.It Ar device
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The name of the device on which the bootstrap is to be installed.
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.El
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.Sh EXAMPLES
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The following command will install the first-stage and second-stage
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boot programs in the bootblock area on
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.Dq sd0c :
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.Bd -literal -offset indent
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installboot sd0
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.Ed
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.Sh SEE ALSO
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.Xr bootpref 8 ,
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.Xr disklabel 8
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.Sh HISTORY
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The
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.Nm
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command first appeared in
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.Nx 1.1
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.Sh BUGS
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.Nm
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knows too much about kernel internal details, forcing it to
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check the running kernel's release and revision.
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.Pp
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Because neither the floppy disk driver nor
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.Xr disklabel 8
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are capable of creating a disk pack label on a floppy disk,
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.Nm
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has to create a\ fictitious label, that is not used by the kernel.
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.Pp
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Except for installation of the bootcode on floppy,
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.Nm
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automatically sets the boot preference in NVRAM to
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.Nx .
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