1.\" $OpenBSD: installboot.8,v 1.5 2021/07/20 14:51:56 kettenis Exp $ 2.\" 3.\" Copyright (c) 2013, 2014 Joel Sing 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.Dd $Mdocdate: July 20 2021 $ 18.Dt INSTALLBOOT 8 19.Os 20.Sh NAME 21.Nm installboot 22.Nd install bootstrap on a disk 23.Sh SYNOPSIS 24.Nm installboot 25.Op Fl npv 26.Op Fl r Ar root 27.Ar disk 28.Op Ar stage1 Op Ar stage2 29.Sh DESCRIPTION 30.Nm 31installs bootstrap on the specified disk. 32The exact process used depends on the system architecture, however there is 33generally a primary bootstrap (often known as a boot block) and a 34secondary bootstrap (often known as a boot loader). 35Some architectures only require a single stage bootstrap, which is written to 36the beginning of the disk. 37.Pp 38The options are as follows: 39.Bl -tag -width Ds 40.It Fl n 41Perform a dry run - do not actually write any bootstrap to the disk. 42.It Fl p 43Prepare filesystem. 44This will create a new filesystem on the partition reserved for the 45boot loader on architectures that require one. 46.It Fl r Ar root 47Specify the mount point of the 48.Ar root 49filesystem to operate on, defaulting to 50.Ar / . 51.It Fl v 52Increase verbosity during operation. 53.It Ar disk 54Specify the 55.Ar disk 56to install the bootstrap on. 57This may be specified using a full pathname, an abbreviated disk form, 58or a disklabel UID. 59.It Ar stage1 60Specify the file to use for the primary bootstrap. 61If not specified, the default for this architecture will be used. 62.It Ar stage2 63Specify the file to use for the secondary bootstrap. 64If not specified, the default for this architecture will be used. 65.El 66.Sh EXAMPLES 67In its most basic form, to install bootstrap on 68.Ar disk 69sd0, using the default primary and secondary bootstrap files: 70.Bd -literal -offset 3n 71# installboot sd0 72.Ed 73.Pp 74To install bootstrap on an 75.Ox 76amd64 machine, using 77.Ar /usr/mdec/biosboot 78as the primary bootstrap and 79.Ar /usr/mdec/boot 80as the secondary bootstrap: 81.Bd -literal -offset 3n 82# installboot -v wd0 /usr/mdec/biosboot /usr/mdec/boot 83.Ed 84.Sh SEE ALSO 85.Xr disklabel 8 86