[Tfug] Virtualbox

[John Hubbard]

On 08/19/2010 06:56 PM, Steve B wrote:
> I am in need of some general advice. Recently I picked up a socket 775 
> machine. Currently it only has a CoreDuo, but it can accept up to a 
> Core2Quad. I'd like to install Ubuntu and then setup Virtual box to 
> run some version of Windows. Would I be better off waiting till I can 
> replace the CPU with a Core2 to gain hardware virtualization, or can I 
> set it all up now on the CoreDuo and upgrade the CPU later? What 
> problems if any might I run into if I choose to run it on the CureDuo 
> now? What problems might I have if I start off on the CoreDuo, then 
> upgrade to a Core2Quad?
This is the opposite direction of what you are asking but I ran into a 
problem with VBox not properly recognizing that my processor had 
virtualization after I had set up a virtual machine with support for 
virtualization.  I don't remember the details about what caused it but 
one day I booted up my XP virtual machine and it told me that AMD-V was 
not supported on my processor.  This is after many months of using the 
same processor with virtualization.  The boot failed, I had to change 
the 'use hardware virtualization' option in VBox and start the virtual 
machine up again.  Honestly for simple workload I couldn't tell a 
difference.  Eventually I got virtualization working again (I think I 
had to update or reinstall VBox), changed the setting back and it just 
worked.  I have also moved virtual machines from one physical machine to 
another.  You should be safe to install the virtual machine, play with 
it, and when you get the new processor, just changed your virtual 
machine settings.

Host was Ubuntu 8.04LTS with an Athlon X2 (Brisbane).

-- 
-john

To be or not to be, that is the question
                 2b || !2b
(0b10)*(0b1100010) || !(0b10)*(0b1100010)
         0b11000100 || !0b11000100
         0b11000100 || 0b00111011
                0b11111111
         255, that is the answer.