153 lines
4.8 KiB
Groff
153 lines
4.8 KiB
Groff
.\" $NetBSD: installboot.8,v 1.2 1996/10/20 16:17:04 pk Exp $
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.\"
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.\" Copyright (c) 1995 Paul Kranenburg
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.\" All rights reserved.
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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 Paul Kranenburg.
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.\" 3. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd September 29, 1995
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.Dt INSTALLBOOT 8
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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 installboot
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.Op Fl nvh
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.Op Fl a Ar karch
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.Ar boot
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.Ar bootxx
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.Ar device
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.Sh DESCRIPTION
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.Nm installboot
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prepares a FFS filesystem partition for boot-strapping from the PROM.
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The sparc bootblocks are split into two parts: a small first-stage program that
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is written into the superblock area in a partition
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.Po
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and hence is limited in size to SBSIZE - DEV_BSIZE bytes
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.Pc ,
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and a second-stage program that resides in the filesystem proper.
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The first-stage program is loaded into memory by the PROM. After it receiving
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control, it loads the second stage program from a set of filesystem block
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numbers that have been hard-coded into it by the
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.Nm installboot
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program. The second-stage boot program uses the device driver interface to
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the PROM and the stand-alone filesystem code in
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.Dq libsa.a
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to locate and load the kernel.
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The second-stage boot program and the prototype code for the
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first-stage bootprogram can be found in
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.Pa /usr/mdec/boot
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and
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.Pa /usr/mdec/bootxx
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respectively. The second-stage program commonly resides in the root directory
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as
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.Pa /boot .
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The utility
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.Pa /usr/mdec/binstall
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can be used to properly copy the a second-stage bootprogram to its
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destination. This script takes care of post-processing that is required
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on
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.Pf non- Tn Openboot
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machines.
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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 a Ar karch
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Set the machine architecture. The argument
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.Ar karch
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can be one of
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.Dq sun4 ,
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.Dq sun4c
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or
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.Dq sun4m .
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Sun 4c models with
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.Tn Openboot
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PROMs need the header to be present, while Sun 4 systems with the
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.Dq old monitor
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interface require the header to be stripped off. This is normally taken
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care of by
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.Nm
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automatically, but it's useful when preparing a bootable filesystem for
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another system.
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.It Fl h
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Leave the
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.Xr a.out 5
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header on the installed
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.Ar bootxx
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program. This option has been superseded by the
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.Fl a Ar karch
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option.
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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 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 bootxx
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.It Ar boot
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the name of the second-stage boot program in the file system
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where the first-stage boot program is to be installed.
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.It Ar bootxx
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the name of the prototype file for the first stage boot program.
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.It Ar device
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the name of the raw device in which the first-stage boot program
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is to be installed. This should correspond to the block device
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on which the file system containing
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.Ar boot
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is mounted.
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.El
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.Sh EXAMPLES
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The following command will install the first-stage bootblocks in the
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root filesystem
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.Pq assumed to be mounted on Dq sd0a
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using the file
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.Pa /boot
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as the second-level boot program:
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.Bd -literal -offset indent
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installboot /boot /usr/mdec/bootxx /dev/rsd0a
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.Ed
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.Sh BUGS
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.Nm
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requires simultaneous access to the mounted file system and
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the raw device, but that is not allowed with the kernel
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.Dv securelevel
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variable set to a value greater than zero
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.Pq the default ,
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so
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.Nm installboot
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only works in single-user mode
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.Pq or insecure mode - see Xr init 8 .
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.Sh "SEE ALSO"
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.Xr disklabel 8 ,
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.Xr init 8
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.Sh HISTORY
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The
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.Nm
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first appeared in
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.Nx 1.1
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