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Windows 8 in a VM / Dual Boot with Bitlocker and Multi-Touch Support

    Question

  • Hi all,

    I need to install a demo copy of Windows 8 on my laptop which is protected by Bitlocker.  I also need support for my laptop's multi-touch screen.

    While I can boot from an installed Windows 8 VHD on my Windows 7 Ultimate drive, I gather Bitlocker will complain unless I decrypt the drive, which just isn't an option.

    I've tried VirtualBox, but there's no touch support in that.

    Does anyone have a good suggestion for a way I can get a Windows 8 VM installed, properly working and keep my Bitlocker encryption please?

    With thanks,

    Mike


    Mike Halsey - Microsoft MVP (Windows Expert Consumer) - Web: www.TheLongClimb.com - Twitter: @mike_halsey - Facebook: mike.halsey - LinkedIn: mikehalseyuk
    Wednesday, September 21, 2011 10:06 AM

Answers

  • On Wed, 21 Sep 2011 10:06:32 +0000, Mike.Halsey [MVP] wrote:

    I need to install a demo copy of Windows 8 on my laptop which is protected by Bitlocker.? I also need support for my laptop's multi-touch screen.

    While I can boot from an installed Windows 8 VHD?on my?Windows 7 Ultimate drive, I gather Bitlocker will complain unless I decrypt the drive, which just isn't an option.

    I've tried VirtualBox, but there's no touch support in that.

    Does anyone have a good suggestion for a way I can get a Windows 8 VM installed, properly working and keep my Bitlocker encryption please?

    I'm afraid that unless you want to modify your current configuration a bit
    then you're out of luck:

    1. VHD boot is simply not supported on a Bitlocker protected volume when
    the VHD file is hosted on the protected volume.

    2. There simply is no current virtualization technology that provides a
    touch display.

    Now, notice the bolded text in point 1. If you have a second drive in your
    laptop that isn't Bitlocker protected, or a second volume on the single
    drive, then you can use the native VHD boot feature.

    If you don't have a second drive, but you have enough free disk space on
    your current drive then you could shrink the current volume to free up
    enough disk space to create a second, unprotected volume and then host the
    VHD on the unprotected volume. Of course with a second volume that wasn't
    protected, you could also install Windows natively and simply dual-boot.

    Check out this blog post for details on the first option:

    http://www.hanselman.com/blog/Windows7WithBitLockerAndStillBootingToVHD.aspx


    Paul Adare
    MVP - Identity Lifecycle Manager
    http://www.identit.ca
    Dump:  The EPA's answer to health.

    Wednesday, September 21, 2011 10:46 AM

All replies

  • As far as I know, the VHD should be located an a non-compressed unencrypted partition. You can store the VHD on compressed partition but make sure to uncompress the target folder for the VHD prior to creating it there. That is if you want a native boot into a VHD from BIOS.

    However, I believe you can use Hyper-V to boot from a VHD that is stored on  encrypted and compressed partition.


    Well this is the world we live in And these are the hands we're given...
    Wednesday, September 21, 2011 10:43 AM
  • On Wed, 21 Sep 2011 10:06:32 +0000, Mike.Halsey [MVP] wrote:

    I need to install a demo copy of Windows 8 on my laptop which is protected by Bitlocker.? I also need support for my laptop's multi-touch screen.

    While I can boot from an installed Windows 8 VHD?on my?Windows 7 Ultimate drive, I gather Bitlocker will complain unless I decrypt the drive, which just isn't an option.

    I've tried VirtualBox, but there's no touch support in that.

    Does anyone have a good suggestion for a way I can get a Windows 8 VM installed, properly working and keep my Bitlocker encryption please?

    I'm afraid that unless you want to modify your current configuration a bit
    then you're out of luck:

    1. VHD boot is simply not supported on a Bitlocker protected volume when
    the VHD file is hosted on the protected volume.

    2. There simply is no current virtualization technology that provides a
    touch display.

    Now, notice the bolded text in point 1. If you have a second drive in your
    laptop that isn't Bitlocker protected, or a second volume on the single
    drive, then you can use the native VHD boot feature.

    If you don't have a second drive, but you have enough free disk space on
    your current drive then you could shrink the current volume to free up
    enough disk space to create a second, unprotected volume and then host the
    VHD on the unprotected volume. Of course with a second volume that wasn't
    protected, you could also install Windows natively and simply dual-boot.

    Check out this blog post for details on the first option:

    http://www.hanselman.com/blog/Windows7WithBitLockerAndStillBootingToVHD.aspx


    Paul Adare
    MVP - Identity Lifecycle Manager
    http://www.identit.ca
    Dump:  The EPA's answer to health.

    Wednesday, September 21, 2011 10:46 AM
  • On Wed, 21 Sep 2011 10:43:00 +0000, Exotic Hadron wrote:

    However, I?believe?you can use Hyper-V to boot from a VHD that is stored on? encrypted and compressed partition <http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=6416>.

    As of Hyper-V in Server 2008 R2, compressed VHD files are no longer
    supported and can't be used.


    Paul Adare
    MVP - Identity Lifecycle Manager
    http://www.identit.ca
    Those who can't write, write help files.

    Wednesday, September 21, 2011 10:48 AM
  • Heck, you are perfectly right, Paul!

     

    Encryption and Compression 

    • Bitlocker on parent partition supported
    • Encrypted File System (EFS)
    • Not supported on parent partition
    • Supported in Virtual Machines
    • NTFS Compression (Parent partition)
    • Allowed in Windows Server 2008
    • Blocked in Windows Server 2008 R2

    In other words, you can't store VHDs on compressed or EFS-encrypted storages neither for using them in Hyper-V nor for native boot in VHD. But it seems like you can work with VHD that are stored on BitLocker-encrypted storages in Hyper-V but not in native boot.


    Well this is the world we live in And these are the hands we're given...

    Wednesday, September 21, 2011 11:45 AM