Copyright (c) 2013, 2014 Joel Sing
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.Dd $Mdocdate: July 20 2021 $ .Dt INSTALLBOOT 8 .Os .Sh NAME .Nm installboot .Nd install bootstrap on a disk .Sh SYNOPSIS .Nm installboot .Op Fl nv .Op Fl r Ar root .Ar disk .Op Ar stage1 Op Ar stage2 .Nm .Op Fl nv .Fl p .Ar disk .Sh DESCRIPTION .Nm installs bootstrap on the specified disk. The exact process used depends on the system architecture, however there is generally a primary bootstrap (often known as a boot block) and a secondary bootstrap (often known as a boot loader). Some architectures only require a single stage bootstrap, which is written to the beginning of the disk.
p The options are as follows: l -tag -width Ds t Fl n Perform a dry run - do not actually write to the disk. t Fl p Prepare filesystem. This will create a new filesystem on the partition reserved for the boot loader on architectures that require one. t Fl r Ar root Specify the mount point of the .Ar root filesystem to operate on, defaulting to .Ar / . t Fl v Increase verbosity during operation. t Ar disk Specify the .Ar disk to install the bootstrap on. This may be specified using a full pathname, an abbreviated disk form, or a disklabel UID. t Ar stage1 Specify the file to use for the primary bootstrap. If not specified, the default for this architecture will be used. t Ar stage2 Specify the file to use for the secondary bootstrap. If not specified, the default for this architecture will be used. .El .Sh EXAMPLES In its most basic form, to install bootstrap on .Ar disk sd0, using the default primary and secondary bootstrap files: d -literal -offset 3n # installboot sd0 .Ed
p To install bootstrap on an .Ox amd64 machine, using .Ar /usr/mdec/biosboot as the primary bootstrap and .Ar /usr/mdec/boot as the secondary bootstrap: d -literal -offset 3n # installboot -v wd0 /usr/mdec/biosboot /usr/mdec/boot .Ed .Sh SEE ALSO .Xr disklabel 8