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