Vt-D Enabled or Disabled

I decided to start a poll to find out if anyone has Vt-D enabled and working with a CPU that supports Vt-D. Now, before you click enabled, after looking at a "LOT" of Intel CPU's, it seems that the "K" versions do not support Vt-D. With that said, it doesn't matter if you have it enabled or not, it's still disabled. If you are not sure, goto Intel's website to verify. I have noticed a lot of people having trouble getting the install off the ground because of Vt-D. I think it should be recommended in the install guides that it is Disabled to make things easier for everyone. We do not need it for VMWare and Parallels, they work fine without it. I've read most Macs come with it disabled, except for the MacPro and Xserve. Which means, probably the only CPU's that work, are Xeon's. I'm thinking, but i could be wrong, that no one has it working with a supported CPU (except Xeon). If someone has it working, please list the Name of your CPU.

So, we have one, can you please list what CPU you are using, thank you.

I am using a 3570k and I have VT-d enabled. On my initial install I had it disabled, but VirtualBox was crashing on me a lot. I enabled VT-d and 10.8.2 booted no problem. VirtualBox now runs without crashing and I can use 64 bit guest OS's. VirtualBox only supports 32 bit guests without VT-d enabled.

I think you have it backwards. I think it is the K processors that work with VT-d.

qbar said:

I am using a 3570k and I have VT-d enabled. On my initial install I had it disabled, but VirtualBox was crashing on me a lot. I enabled VT-d and 10.8.2 booted no problem. VirtualBox now runs without crashing and I can use 64 bit guest OS's. VirtualBox only supports 32 bit guests without VT-d enabled.

I think you have it backwards. I think it is the K processors that work with VT-d.

Click to expand...

No, goto Intel's website, you'll see that your CPU does not support Vt-D, it does't matter if you have it enabled in BIOS or not. You are not using Vt-D. So it is the same as having it disabled.


http://ark.intel.com/products/65520/Intel-Core-i5-3570K-Processor-6M-Cache-up-to-3_80-GHz

Bimmer325Ci said:

No, goto Intel's website, you'll see that your CPU does not support Vt-D, it does't matter if you have it enabled in BIOS or not. You are not using Vt-D. So it is the same as having it disabled.

Click to expand...

Well, something changes because VirtualBox lets me make different settings choices depending on how I have it set in my BIOS as well as working great with 64 bit guests.

The bottom line for me is that vt-d disabled = virtualbox crashes; vt-d enabled = flawless virtualbox. Everything else in my setup seems to work the same either way.

qbar said:

Well, something changes because VirtualBox lets me make different settings choices depending on how I have it set in my BIOS as well as working great with 64 bit guests.

The bottom line for me is that vt-d disabled = virtualbox crashes; vt-d enabled = flawless virtualbox. Everything else in my setup seems to work the same either way.

Click to expand...

You might want to check your settings in Virtualbox, I'm using it too, with it disabled in BIOS, because my CPU does support Vt-D. Runs Windows 8 Pro 64-Bit with no problems. But, if you think your using Vt-D, keep on thinking.

I think maybe you setup your VM with it enabled in BIOS, so Virtualbox assumed you have Vt-D, enabled features for it, but are really not using them. So, when you disable it, it crashes. Try creating a new VM with it disabled, I'm sure it will run fine. I wish I could use Vt-D, but OS X will not boot up with it enabled.

Bimmer325Ci said:

You might want to check your settings in Virtualbox, I'm using it too, with it disabled in BIOS, because my CPU does support Vt-D. Runs Windows 8 Pro 64-Bit with no problems. But, if you think your using Vt-D, keep on thinking.

Click to expand...

I guess I am just able to use vt-x.

VT-D enabled (with VT-D capable CPU) on my system! No problem at all.

I run an i7-3770s over a k model solely for the purpose of VT-d which I use for Virtualization passthrough on my Linux system. It's getting old switching it on and off in the BIOS before going between systems. I voted disabled because it's the only way I could get my system to boot, but I am VERY interested if anyone has found a method to get it working for them. I'd really like to enable this!