English Community

Lenovo NotebooksLenovo P, Y and Z series Notebooks
All Forum Topics
Options

44 Posts

10-25-2008

USA

455 Signins

2073 Page Views

  • Posts: 44
  • Registered: ‎10-25-2008
  • Location: USA
  • Views: 2073
  • Message 101 of 123

Re: NO XP Mode for Lenovo Notebooks!!!

2009-09-17, 3:26 AM

Seems to be putting values into the CPU's registers, so it should be chipset/hardware agnostic.  I'm just not sure which value goes in which particular register.  I'm not even close to a novice when it comes to this stuff so I don't wanna brick this machine.  Although what i understand is that the registers are volatile so if I did input a bad value all I'd need to do is reset the machine.

 

Will research further.

 

But i suppose it's gotta go through the chipset to get to the CPU to go in the registers.  Didn't seem to work for me, no change to the MSR that I could see.

 

http://software.intel.com/en-us/forums/virtualization-software-development/topic/60686/

 

This may be the final nail.  David Ott states about 5 or 6 posts down that there must be a VT "fuse" in place and enabled for the MSR to be modifiable.  Since I can't seem to write the value to the register I'm betting that these CPUs have been disabled by Intel at Lenovo's request.  There's nothing wrong with this, but from what I've seen and heard, Lenovo hasn't made any comment to this effect other than the line doesn't support it despite the fact that two models support it out of box.

 

We'll see

Reply
Options

3 Posts

09-03-2009

South Africa

8 Signins

148 Page Views

  • Posts: 3
  • Registered: ‎09-03-2009
  • Location: South Africa
  • Views: 148
  • Message 102 of 123

Re: NO XP Mode for Lenovo Notebooks!!!

2009-09-17, 7:12 AM

Does not work on my Y730 (p8600) either. CPUID does report that VT is supported however, but I still need to do furthur research to discover where it gets this info from.

 

Looking at some some other resources where others have disasembled their bios it looks like the BIOS is capable of issuing an instruction to lock the register at boot time. So just because you cannot modify the register once Windows is running does not mean that your CPU is not capable of virtualization.

 

Will do some more digging !

Reply
Options

525 Posts

03-11-2009

Chicago, IL

300 Signins

14180 Page Views

  • Posts: 525
  • Registered: ‎03-11-2009
  • Location: Chicago, IL
  • Views: 14180
  • Message 103 of 123

Re: NO XP Mode for Lenovo Notebooks!!!

2009-09-17, 20:39 PM

Hi, I doubt the chips are 'disabled' in any way. If you have a processor that supports VT in an Ideapad I am sure that it supports VT. Right, the only question is are the MSRs locked on this particular implementation. I could not change any of the registers either, then again I have a T5800 but I don't think it should have mattered. I also noticed in my research that on the Unix side it is pretty simple to write to the registers using a block device in /dev. Any one running any form of Linux? There are some C and python progs out there someone wrote to do this for the Sony's.

Reply
Options

525 Posts

03-11-2009

Chicago, IL

300 Signins

14180 Page Views

  • Posts: 525
  • Registered: ‎03-11-2009
  • Location: Chicago, IL
  • Views: 14180
  • Message 104 of 123

Re: NO XP Mode for Lenovo Notebooks!!!

2009-09-17, 20:40 PM

PS Richard the processor reports that it is capable and the P8600 is.

Reply
Options

3 Posts

09-03-2009

South Africa

8 Signins

148 Page Views

  • Posts: 3
  • Registered: ‎09-03-2009
  • Location: South Africa
  • Views: 148
  • Message 105 of 123

Re: NO XP Mode for Lenovo Notebooks!!!

2009-09-18, 6:48 AM

My point exactly. I did not say that the CPU does not support VT, what I am saying is that the BIOS locks the register on boot. Because of this I doubt even Linux will be able to modify it. Therefore the only solution I see is one that involves preventiong the BIOS from locking this register. As others have done. I have not had time to test these techniques on my Ideapad, but will post the results here when I get round to it.

Reply
Options

44 Posts

10-25-2008

USA

455 Signins

2073 Page Views

  • Posts: 44
  • Registered: ‎10-25-2008
  • Location: USA
  • Views: 2073
  • Message 106 of 123

Re: NO XP Mode for Lenovo Notebooks!!!

2009-09-18, 15:07 PM

If anyone can find a BIOS recovery procedure for the Ideapads, that'd be awesome.  I've been wanting to try fixing this problem myself, but not without some way to fix my fixing...

Reply
Options

14 Posts

06-30-2009

USA

19 Signins

149 Page Views

  • Posts: 14
  • Registered: ‎06-30-2009
  • Location: USA
  • Views: 149
  • Message 107 of 123

Re: NO XP Mode for Lenovo Notebooks!!!

2009-09-22, 3:21 AM

cntse,

 

I don't think it will be possible to enable this feature, through bios recover or any other methods, until Lenovo decides to release an update that unlocks it.

Reply
Options

525 Posts

03-11-2009

Chicago, IL

300 Signins

14180 Page Views

  • Posts: 525
  • Registered: ‎03-11-2009
  • Location: Chicago, IL
  • Views: 14180
  • Message 108 of 123

Re: NO XP Mode for Lenovo Notebooks!!!

2009-09-23, 14:56 PM

Hi, No it has been done with the Sony's. I have read of both AMI Aptio BIOS being modded as well as Insyde BIOS being modded. Best bet to save off the BIOS is to boot into Linux to do it. Under Win 7 x64 I have had no luck using any of AMI's  windows flash tools for Aptio.

Reply
Options

64 Posts

10-17-2008

Poland

113 Signins

732 Page Views

  • Posts: 64
  • Registered: ‎10-17-2008
  • Location: Poland
  • Views: 732
  • Message 109 of 123

Re: NO XP Mode for Lenovo Notebooks!!!

2009-10-07, 17:38 PM

Any updates about lenovo taking steps to provide vt support for ideapads?

Ideapad Y530; P9500 @ 2.53 GHz; 250 GB 7200 rpm HDD; 4 GB OCZ RAM, nVIDIA GeForce 9300M GS
Reply
Options

171 Posts

10-30-2009

Russia

1236 Signins

5167 Page Views

  • Posts: 171
  • Registered: ‎10-30-2009
  • Location: Russia
  • Views: 5167
  • Message 110 of 123

Re: NO XP Mode for Lenovo Notebooks!!!

2009-11-01, 2:44 AM

Hi guys!

Maybe I can help you. I have recently added VT support in MSI GX600 BIOS. You can get more info about that here http://forum.notebookreview.com/showthread.php?t=379144

And if you want me to solve your problem then tell me the type of your BIOS first. To do that you have to enter in BIOS setup and then post here the full header of setup window. Also write CPU index and the model of laptop (for example: Lenovo Y550, P8400).

Reply
Forum Home

Community Guidelines

Please review our Guidelines before posting.

Learn More

Check out current deals!

Go Shop
X

Save

X

Delete