Windows 8 and 8.1 Forums


Windows 8 VHD - Create at Boot to Dual Boot with

  1. #40


    Orbiting the Moon
    Posts : 2,972
    Windows 10 x64


    Good idea.
    I don't really need this since I got a dynamically VHD working, but when I get the time, I'll test it out.

    Thank you.

      My System SpecsSystem Spec

  2. #41


    Portsmouth Hants
    Posts : 772
    Windows 8.1 Pro with Media Center


    Does anyone know if VHD booting is going to be supported by all editions of Windows 8? - notably the plain, core edition that will be preinstalled on most OEM 'home' PCs.
      My System SpecsSystem Spec

  3. #42


    Posts : 21,818
    64-bit Windows 10


    Hello fafhrd,

    Sorry, but no. Booting from a VHD will only be supported in Windows 8 Pro and Windows 8 Enterprise.

    Compare Windows 8 Editions
      My System SpecsSystem Spec

  4. #43


    Portsmouth Hants
    Posts : 772
    Windows 8.1 Pro with Media Center


    Thanks Shawn
      My System SpecsSystem Spec


  5. #44


    Posts : 21,818
    64-bit Windows 10


    You're welcome.
      My System SpecsSystem Spec

  6. #45


    Orbiting the Moon
    Posts : 2,972
    Windows 10 x64


    Quote Originally Posted by Brink View Post
    Hello Hopachi,

    I know you can with a fixed or expandable VHD file, but I've never tried it with multipart VHDs. It's not going to hurt to give it a try though. It either will or not.
    I've tested it out: a multipart VHD cannot boot.

    Multipart VHD are old fashion and only the ones made by Virtual PC on fat32 systems work for VM's on Virtual PC (thes same program that made them).

    It was difficult to split one VHD because Windows GUI doesn't provide a way (and it's not even needed on NTFS disks).

    VHD specification says that the file is simply (binary) split into chunks.

    The test consists of a 2GB (static) VHD created in Win7 Disk Management.
    Disk allready formatted to NTFS for testing but that is not important.

    At the Command Prompt, Diskpart is able to select and assign the VHD (vdisk).
    THEN:
    I've used HJ-Split to split the VHD 2GB disk:
    Click image for larger version
    Two pieces of 1GB were made + a piece of just a few bytes (total 3 pieces).
    They had to be renamed to: part1.vhd, part2.v01, part3.v02...

    AND Diskpart doesn't recognize the splitted disk (says is corrupt):
    Click image for larger version
    Not even Virtual PC 2007 was able to use this disk (I think only his own splitted disks on fat32 are accepted) but I was testing on NTFS (Win7 x64) and not on fat32 (preferably Win98 where people say it should work):
    Click image for larger version

    Then I recombined the pieces to prove the disk is still intact:
    Click image for larger version
    And diskpart recognizes it again and selection + assign is possible.
    And even VPC recognizes it again:
    Click image for larger version

    CONCLUSION:

    A multipart (splitted) VHD disk is not selectable and not assignable (important part) by diskpart and therefore not possible to copy files on it or to boot with it.


    This test was using the normal procedure (diskpart assign) of the tutorial. Maybe there are some other (too) extreme ways that can make this work but for now I'm aware of none, and splitting is not needed on NTFS.

    That's it
    Hopachi
      My System SpecsSystem Spec

  7. #46


    Posts : 21,818
    64-bit Windows 10


    Hello Hopachi,

    I didn't think that it would. Thank you for posting back to confirm it.
      My System SpecsSystem Spec

  8. #47


    Orbiting the Moon
    Posts : 2,972
    Windows 10 x64


    You're welcome Shawn.

    The test was just to make sure, since nobody else replied.
      My System SpecsSystem Spec

  9. #48


    Posts : 12
    Windows 8 Pro x64


    I just tried to create a VHD on my Win7HPx64 laptop as a test. I named it a V drive and gave it 2048 MB. As you can see in the image, after creating V: I gave a "list volume" command and it didn't show up.

    Any idea why it was not created?

    Click image for larger version
      My System SpecsSystem Spec

  10. #49


    Posts : 21,818
    64-bit Windows 10


    Hello Cyberbiker,

    Sorry, but only the Windows 7 Ultimate and Windows 7 Enterprise editions support booting from a VHD.

    Virtual Hard Drive VHD File - Create and Start with at Boot - Windows 7 Forums
      My System SpecsSystem Spec

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Windows 8 VHD - Create at Boot to Dual Boot with

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