blog/content/2015/07/installing-and-running-netbsd-and.html

---
title: Installing and running NetBSD and OpenBSD under bhyve
description: >
  Installing and running NetBSD and OpenBSD under bhyve
created: !!timestamp '2015-07-28'
time: 8:37 PM
tags:
  - NetBSD
  - OpenBSD
  - bhyve
  - FreeBSD
---

These instructions assume that you have downloaded the install ISO from
the respective sources.  These were doing with specific versions, and
there may be minor changes with older and newer versions.

These instructions could possibly be more simple, such as not using
separate device maps for `grub-bhyve`.   These were testing on a month
old HEAD.

There are other guides that cover most of this, and probably in more
detail.  The issue that I had was the exact commands to grub to load
kernels was not well documented.  Both of the images boot and are able
to get DHCP leases and pass basic traffic.

Hope this helps others!

## NetBSD

1. Install `grub2-bhyve`:
   <pre class="fullwidth"><code>
   pkg install grub2-bhyve
   </code></pre>
2. Create a file called `instdev.map` containing:
   <pre class="fullwidth"><code>
   (cd0) NetBSD-6.1.5-amd64.iso
   (hd1) netbsd.img
   </code></pre>
3. Create the file `netbsd.img` with the correct size:
   <pre class="fullwidth"><code>
   truncate -s 3g netbsd.img
   </code></pre>
4. Run the following commands (or put into a script file) under `sh`:
   <pre class="fullwidth"><code>
   MEM=512M
   VM=nbsd615
   bhyvectl --destroy --vm=$VM
   grub-bhyve -r cd0 -M $MEM -m instdev.map $VM &lt;&lt;EOF
   knetbsd -h -r cd0a
   (cd0)/netbsdboot
   EOF
   bhyve -A -H -P -s 0:0,hostbridge -s 1:0,lpc \
       -s 2:0,virtio-net,tap3 -s 3:0,virtio-blk,./netbsd.img \
       -s 4:0,ahci-cd,./NetBSD-6.1.5-amd64.iso \
       -l com1,stdio -c 2 -m $MEM $VM
   </code></pre>
5. This will run the installer, complete the installation.
6. Create a file called `dev.map` containing:
   <pre class="fullwidth"><code>
   (hd1) netbsd.img
   </code></pre>
7. Now in the future, to run NetBSD from the image, run the following commands:
   <pre class="fullwidth"><code>
   MEM=512M
   VM=nbsd615
   bhyvectl --destroy --vm=$VM
   grub-bhyve -r cd0 -M $MEM -m dev.map $VM &lt;&lt;EOF
   knetbsd -h -r ld0a
   (hd1,msdos1)/netbsdboot
   EOF
   bhyve -A -H -P -s 0:0,hostbridge -s 1:0,lpc \
       -s 2:0,virtio-net,tap3 -s 3:0,virtio-blk,./netbsd.img \
       -l com1,stdio -c 2 -m $MEM $VM
   </code></pre>
8. Profit!

## OpenBSD

1. Install `grub2-bhyve`:
   <pre class="fullwidth"><code>
   pkg install grub2-bhyve
   </code></pre>
2. Create a file called `instdev.map` containing:
   <pre class="fullwidth"><code>
   (cd0) install57.iso
   (hd1) openbsd.img
   </code></pre>
3. Create the file `openbsd.img` with the correct size:
   <pre class="fullwidth"><code>
   truncate -s 3g openbsd.img
   </code></pre>
4. Run the following commands (or put into a script file) under `sh`:
   <pre class="fullwidth"><code>
   MEM=512M
   VM=obsd57
   bhyvectl --destroy --vm=$VM
   grub-bhyve -r cd0 -M $MEM -m instdev.map $VM &lt;&lt;EOF
   kopenbsd -h com0
   (cd0)/5.7/amd64/bsd.rdboot
   EOF
   bhyve -A -H -P -s 0:0,hostbridge -s 1:0,lpc \
       -s 2:0,virtio-net,tap3 -s 3:0,virtio-blk,./openbsd.img \
       -s 4:0,ahci-cd,./install57.iso \
       -l com1,stdio -c 2 -m $MEM $VM
   </code></pre>
5. This will run the installer, complete the installation.
6. Create a file called `dev.map` containing:
   <pre class="fullwidth"><code>
   (hd1) netbsd.img
   </code></pre>
7. Now in the future, to run OpenBSD from the image, run the following commands:
   <pre class="fullwidth"><code>
   MEM=512M
   VM=obsd57
   bhyvectl --destroy --vm=$VM
   grub-bhyve -r hd1 -M $MEM -m dev.map $VM &lt;&lt;EOF
   kopenbsd -h com0 -r sd0a
   (hd1,openbsd1)/bsdboot
   EOF
   bhyve -A -H -P -s 0:0,hostbridge -s 1:0,lpc \
       -s 2:0,virtio-net,tap3 -s 3:0,virtio-blk,./openbsd.img \
       -s 4:0,ahci-cd,./install57.iso \
       -l com1,stdio -c 2 -m $MEM $VM
   </code></pre>
8. Profit!