64 bit host on 32 bit guest.

Post by **TerryE** » 8. May 2009, 12:42

To be fair this is also covered in the Forum FAQ and in the Virtualbox documentation in some depth. The issue is that the VBox app can't tell the difference between the CPU not being VT-x enabled and the BIOS not enabling it: the functionality isn't their when it looks for it. Both AMD and Intel are continuously bringing out new chips, so maintaining a mapping of CPU type and stepping to VT-x capability is quite a chore. Far easier to consult the vendor documentation or Wikipedia.

Post by **vbox4me2** » 8. May 2009, 14:10

I've added two links to the quickclick faq with intel and amd tools that will tell you the status of vt-x.

cyruspy · Post by **cyruspy** » 12. May 2009, 15:41

I'm trying to run a 64bit machine with VBox 2.2.2 on Windows XP 32 bits and it complains about VT-x/AMD-V not being operational. I double checked and the virtualization option is activated in BIOS, also updated to the latest version of it and downloaded the Intel Procesor Identification Utility which confirms my processor (C2D E6550) supports VT-x.

Is this supported on Windows?

Post by **vbox4me2** » 12. May 2009, 19:53

Try vbox 2.08 or 2.1.4, if they can use vt-x it can be a 2.2.2 bug.

artso · Post by **artso** » 7. Jul 2009, 12:05

When this bug will fixed? I'm have same problem. 2.1.x work, but 2.2.x and 3.0 don't.

Post by **vbox4me2** » 7. Jul 2009, 16:25

Something to try:
1. disable vt-x
2. unplug the pc from power, wait 1 minute
3. enable vt-x
4. unplug the pc from power, wait 1 minute

artso · Post by **artso** » 7. Jul 2009, 21:18

Not effective. VMware-guest64check displayed what computer compatible.
VirtualBox 2.1.0, 2.1.2, 2.1.4 work normal. But 2.2.0, 2.2.2, 2.2.4, 3.0.0 don't work.
I test now all listed versions.

Post by **TerryE** » 7. Jul 2009, 23:44

IIRC 2.1.x if you ticked the VT-x box but weren't VT-x enabled then it would quietly fall back to software virtualisation and thus appear to work. This is what happened on my XP laptop.

Post by **Sasquatch** » 8. Jul 2009, 00:12

TerryE wrote:IIRC 2.1.x if you ticked the VT-x box but weren't VT-x enabled then it would quietly fall back to software virtualisation and thus appear to work. This is what happened on my XP laptop.

Possible, but 64 bit needs hardware virtualization. It won't run on software, remember?

Post by **TerryE** » 8. Jul 2009, 02:20

Sasquatch wrote:Possible, but 64 bit needs hardware virtualization. It won't run on software, remember?

Touché

jmar83_the2nd · Post by **jmar83_the2nd** » 29. Nov 2012, 02:35

"host on guest" makes no logical sense...

Twisted Lucidity · Post by **Twisted Lucidity** » 29. Nov 2012, 11:43

Why did you respond in a thread that's about three years old?

Don't wake the dead.

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64 bit host on 32 bit guest.

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Re: 64 bit host on 32 bit guest.