Re: [Hampshire] Virtual Box

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Author: Adam Trickett
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To: Hampshire LUG Discussion List
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Subject: Re: [Hampshire] Virtual Box

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On Sunday 11 Nov 2007, Hugo Mills wrote:
> On Sun, Nov 11, 2007 at 11:16:22AM +0000, Adam Trickett wrote:
> > The problem I have with qemu/kqemu is that only WinNT4 seems to run in
> > the kqemu mode everything else fails to run with client side BSOD or
> > kernel panics. I'm running qemu under AMD64 not i386 so odd things
> > happen.
>
>    I run qemu, kqemu and kvm systems on various amd64 boxes. The main
> thing I've found you need to do (particularly with Windows XP, but
> RHAS, Fedora and Debian as well) is to install with plain qemu -- no
> acceleration (kqemu, kvm) -- and with ACPI and APIC support turned
> off. Once you've completed the installation of your OS, you can go
> ahead and turn on ACPI, APICs and the acceleration mechanism of your
> choice. I have few, if any, problems with it.


The VirtualBox people recommend IO APIC permenantly disabled, and ACPI to be
either always on or off, changing is bad as the Windows kernels are different
and it will crash if you switch from on to off after installing.

Windows NT4 under VirualBox runs like a dream, as it does under QEMU/kqemu.
The only problems I've found is getting sound enabled under Virtualbox and
the mouse instability on Quem after an hour or two. CPU load seems lower
under Virtualbox, once NT4 is running and sitting idle it was taking 2-3% CPU
on my AMD64 box, under qemu/kquem it's more like 25%, though both will easily
hit 99% under any kind of activity.

Win98 works under both, but has no more than basic VGA 640x480 16 colour under
virtualbox, whereas under qemu there are proper drivers and so the video is
fine. It did take me a while to get the network working under qemu, whereas
it was easy under virtual box.

I think on my box at the moment I'd say NT4 runs faster under Virtualbox than
qemu/kqemu. Other than NT4 I've not got any other OS to run in kqemu mode at
all yet, they all fail on boot, be that Linux, BSD or a Windows.

--
Adam Trickett
Overton, HANTS, UK

A man is known by the books he reads.
    --  Ralph Waldo Emerson