This directory contains VirtualBox images of NetBSD.  The file:

  Virtualbox_NetBSD_full.vdi

contains a full system, and the file:

  Virtualbox_NetBSD_baseonly.vdi

contains a small base-only system.

These images are used with VirtualBox, which can be downloaded from:

  https://www.virtualbox.org/wiki/Downloads

Virtualbox will run a x86/amd64 machine running Windows, OS X, Linux, and
Solaris.  Newer machines with VT-x virtualisation extensions are best for
running NetBSD under VirtualBox.  If your machine has VT-x extensions,
they might need enabling in the BIOS settings, as some machines have them
disabled by default.

After installing VirtualBox and downloading one of the images, start up
VirtualBox and then:

  select the "New" button
  enter a name (e.g. NetBSD)
  select Type "BSD"
  select Version "NetBSD"
  select a memory size (e.g. 512 MB)
  select "Use an existing virtual hard drive file" and choose the image file
  select "Create"

Run the image by selecting "Start".

On some machines, the NetBSD kernel will fail to start, and crash with the
error:

  Stopped in pid 0.20(system) at netbsd:Xspllower+0x16: addb 0(%eax), %al

A workaround for this is to run something like:

  vboxsdl --norawr0 --startvm NetBSD

(assuming that you named your NetBSD virtual machine "NetBSD").

Some links that might be useful:

  http://memset.wordpress.com/2011/05/09/how-to-install-netbsd-on-linux-virtualbox/
  http://netbsdjourney.blogspot.com/2010/06/netbsd-meets-xorg-meets-virtualbox.html

If you are running under Windows, you can run VirtualBox from the command line
and add the --norawr0 option.  See:

  http://superuser.com/questions/216692/how-to-run-a-virtualbox-vm-from-command-line

Note, that newer versions might need a command line similar to:

  VirtualBox --startvm NetBSD --recompile-supervisor