installboot —
install bootstrap on a disk
| installboot |
[-nv]
[-r
root]
disk
[stage1
[stage2]] |
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}