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willrob27
What's DOS?
Posts: 1
Registered: ‎12-03-2008
Location: UT, US
Views: 2,676
Message 1 of 3

T60p: Intel Virtualization Technology & Execute Disable Bit

I have a T60P laptop and I am trying to get Server 2008 Hyper-V installed and working on it.

 

I set the virtualization Technology to enabled in the bios (version 2.23) and when I tried to start hyper-v it failed.  I found out that you need execute disable bit enabled also.  The problem is as soon as I enable that, it disables the virtualization technology through the software.  What I see is that they are both enabled in the bios, but the Intel Processor Identification Utility shows the virtualization techology as No.  If I disable Execute disable bit, then it shows virtualization technology as yes.  

 

Any ideas???

 

Thanks

 

 Moderator note: Type added to subject line for clarity.

Message Edited by Agotthelf on 04-05-2009 07:06 PM
jjesusfreak01
What's DOS?
Posts: 1
Registered: ‎05-04-2009
Location: Chapel Hill, NC, USA
Views: 2,340
Message 2 of 3

Re: Intel Virtualization Technology & Execute Disable Bit

Im having the same problem. I think there is likely either a chipset or BIOS error here. The only long term solution would be to have a working version of the BIOS released.
Retired Guru
Posts: 993
Registered: ‎03-10-2009
Location: Michigan
Views: 2,327
Message 3 of 3

Re: Intel Virtualization Technology & Execute Disable Bit

Hi,

 

I have no experience with Server 2008 Hyper-V, but do have some with the similar VMware. In the course of setting that up I came across the following links:

 

http://x86vmm.blogspot.com/2006/04/intel-quietly-backing-away-from-vt.html

 

http://communities.vmware.com/message/376400

 

http://developers.slashdot.org/article.pl?sid=06/08/12/2028223

 

The bottom line seems to be that hardware VT may actually reduce performance on Core Duo, which does not support EM64T. VMware disables hardware VT in software for this reason; it seems likely that Server 2008 Hyper-V does the same. So I don't think it's a BIOS / chipset bug.

 

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Results of Your Ideal Business-Class Laptop survey, concluded 2009-07-29.

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