installboot —
install bootstrap on a disk
installboot |
[ -nv
]
[-r
root
]
disk
[] |
installboot 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.
The options are as follows:
-
-
-n- Perform a dry run - do not actually write any bootstrap to the disk.
-
-
-r
root- Specify the mount point of the root
filesystem to operate on, defaulting to
/.
-
-
-v- Increase verbosity during operation.
-
-
- disk
- Specify the disk to install the bootstrap
on. This may be specified using a full pathname, an abbreviated disk form,
or a disklabel UID.
-
-
- stage1
- Specify the file to use for the primary bootstrap. If not specified, the
default for this architecture will be used.
-
-
- stage2
- Specify the file to use for the secondary bootstrap. If not specified, the
default for this architecture will be used.
In its most basic form, to install bootstrap on
disk sd0, using the default primary and
secondary bootstrap files:
To install bootstrap on an
OpenBSD amd64 machine, using
/usr/mdec/biosboot as the primary bootstrap
and
/usr/mdec/boot as the secondary
bootstrap:
# installboot -v wd0 /usr/mdec/biosboot /usr/mdec/boot
disklabel(8)
![[OpenBSD]](/openbsd.gif){kind=small}