.\" $NetBSD: installboot.8,v 1.1 1996/11/06 23:07:55 cgd Exp $ .\" .\" Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. .\" Copyright (c) 1995 Paul Kranenburg .\" All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" 3. All advertising materials mentioning features or use of this software .\" must display the following acknowledgement: .\" This product includes software developed by Paul Kranenburg. .\" 3. The name of the author may not be used to endorse or promote products .\" derived from this software without specific prior written permission .\" .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR .\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES .\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. .\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, .\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT .\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, .\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY .\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. .\" .Dd November 6, 1996 .Dt INSTALLBOOT 8 .Os .Sh NAME .Nm installboot .Nd install bootstrap software on an FFS partition .Sh SYNOPSIS .Nm installboot .Op Fl nv .Ar boot .Ar bootxx .Ar device .Sh DESCRIPTION The .Nm installboot utility prepares an FFS partition for bootstrapping. .Pp The NetBSD/alpha disk bootstrap software is split into two parts: a small first-stage boot program that is written into the disklabel area of a disk .Po and hence is limited in size to 7680 bytes .Pc , and a second-stage boot program that resides in the filesystem proper .Po typically with the name .Pa /boot .Pc . The first-stage boot program is loaded into memory by the SRM console software. After receiving control of the system, it loads the second-stage boot program from a set of filesystem block numbers that have been hard-coded into it by .Nm installboot . The second-stage boot program locates and loads the kernel. .Pp The second-stage boot program and the prototype code for the first-stage boot program can be found in .Pa /usr/mdec/boot and .Pa /usr/mdec/bootxx , respectively. .Pa /usr/mdec/boot may be installed simply by copying it to the root directory of the partition you wish to boot from, but after it is installed .Nm installboot .Em must be run. .Pp The options recognized by .Nm installboot are as follows: .Bl -tag -width flag .It Fl n Do not actually write anything on the disk. .It Fl v Verbose mode. .El .Pp The arguments are: .Bl -tag -width bootxx .It Ar boot The name of the second-stage boot program in the file system where the first-stage boot program is to be installed. .It Ar bootxx The name of the prototype file for the first-stage boot program. .It Ar device The name of the raw device in which the first-stage boot program is to be installed. This should be the raw device containing the file system which holds .Ar boot . .El .Sh EXAMPLES The following command will install the first-stage boot program in the root filesystem .Pq assumed to be mounted from Dq sd0a using the file .Pa /boot as the second-stage boot program: .Bd -literal -offset indent installboot /boot /usr/mdec/bootxx /dev/rsd0a .Ed .Sh BUGS NetBSD/alpha systems are only capable of booting off of disks' .Dq a partitions, and bootable partitions must start at the beginning of the disk. .Pp .Nm Installboot requires simultaneous access to the mounted file system and the raw device. That is not allowed with the kernel .Dv securelevel variable .Po see .Xr sysctl 8 .Pc set to a value greater than zero, so .Nm installboot only works when the system is in an insecure mode (e.g. single-user mode; see .Xr init 8 ). .Sh "SEE ALSO" .Xr disklabel 8 , .Xr init 8 , .Xr sysctl 8 .Sh HISTORY The NetBSD/alpha .Nm command first appeared in .Nx 1.2 .