Multi-boot dual-boot magic machine.

[Alan Somers]

On Tue, Feb 23, 2016 at 1:11 PM, Zaphod Beeblebrox <zbeeble at gmail.com> wrote:
> So my end goal is this: that I can run win7 with an FreeBSD guest and I can
> run FreeBSD with a win7 guest. and that both of these are achieved such
> that there is one copy of each operating system on the workstation.
>
> Now... I have achieved the former --- that is FreeBSD boots both by itself
> and under vmware hosted by win7.  On the bare metal, this uses the nvidia
> binary driver, but on the VM, it would be convenient if this used the
> vmware driver.  Not _just_ that, but the nvidia binary driver has several
> options to drive two monitors where as the vmware instance would only have
> one.
>
> Has anyone given any thought to
>
> 1. Detectiing system changes in loader
> 2. Setting system environment variables from loader
> 3. Having filesystem alternatives based on environment variables (a-la
> DG-UX0
>
> ... or some other way to achieve this?

"sysctl kern.vm_guest" will tell you whether you're emulated or
running on bare metal.  You can use that in /etc/rc.conf to
conditionally set anything you want.

-Alan