Windows 8 and 8.1 Forums


How do I run Win7Ultimate vitrual OS on Win8.1 Pro

  1. #1


    Posts : 3
    Win8.1Pro

    How do I run Win7Ultimate vitrual OS on Win8.1 Pro


    I would like to install Win8.1 Pro on my computer. However, I have a licensed and legal version of Win7Ultimate on that computer which has certain apps I need but can't reinstall on Win8 because they were free offers limited to one time activation on the day of installation. My research indicates I could run the Win7 OS as a virtual machine on Win8.

    So, I was hoping for some help on the following:
    1. Which is the best way to convert my win7ultimate to a virtual disk? I have found some guidance on 1 - sysinternals Disk2VHD. Is that the best free tool to create a virtual disk of an existing hard drive/OS?

    2. Although I have reduced my win7 installation to under 60GB, I would need to store it on an external drive and I read somewhere that a virtual disk on an external USB drive could be an issue, but not sure what or why.

    3. Is there a step by step guide for setting up and running a virtual disk on win8? The only guidance on #3 I have found has been to install the win7 OS on a new virtual disk created on the win8 machine, which I can't do because while I would be able to reinstall the win7 OS (it is a legal standalone license), I can't reinstall the apps as they were giveaway apps only to be installed once.

    Can anyone help me? And I apologize in advance if there is a simple solution but I am a n00b at this and probably need some really basic and simple guidance. Thank you.

      My System SpecsSystem Spec

  2. #2


    Hello there justlearning and welcome to eightforums.
    Disk2VHD
    will do just fine,am using it personally and works smooth like a baby's cheek.Just check MBR partition (if any) alongside OS containing partition and follow prompts.Must admit,I am running it from an internal drive,so I dont really know about issues,when running it from an enclosure.
    Will you be using Oracle VBox or VMware?
      My System SpecsSystem Spec

  3. #3


    A Finnish ex-pat in Leipzig, Germany
    Posts : 1,452
    Windows 8.1 Pro with Media Center


    With the Pro edition of Windows 8.1 you get Hyper-V virtualization. See this tutorial at our sister site to see how you can create a VHD of your current Windows 7 installation and use it as a virtual machine in Windows 8.1 Pro Hyper-V: Hyper-V - Create and Use VHD of Windows 10 with Disk2VHD

    Notice that even the tut is made to show how to virtualize your existing Windows 10 installation (Part One), Disk2VHD works exactly the same way in Windows 7. The same with Part Two of the tutorial, you create the Windows 7 virtual machine exactly the same way you create a Windows 10 vm. In addition, Hyper-V virtualization in Windows 8.1 Pro works exactly as it works in Windows 10 so the tutorial can be used as it is in your situation.

    Kari
      My System SpecsSystem Spec

  4. #4


    Posts : 3
    Win8.1Pro


    @proudtobegreek - not sure about oracle or vmware....I have read good about both, but running the virtual machine from an external HD seems to be an issue with both...so not sure what to use but the posting by Kari mentioned the Hyper-V functionality in win8, so I am going to give that a try first. Thank you (efkaisto...forgive the phonetic spelling).

    @Kari...I had not seen the win10 tutorial. I think that is what I need so I will using it this week-end. I went ahead and installed win8.1 on a separate HD which I have attached to my workstation. I had disconnect the HD with Win7Ultimate but will reconnect it and create the VHD as the tutorial instructs. Thank you for your guidance.

    I will report back on my progress once I get the VHD created and connected using Hyper-V.
      My System SpecsSystem Spec

  5. #5


    A Finnish ex-pat in Leipzig, Germany
    Posts : 1,452
    Windows 8.1 Pro with Media Center


    In Windows 8.1, when you have enabled hardware virtualization in BIOS you can start with this tutorial: Hyper-V - How to Use in Windows 8

    More about virtual switches in Hyper-V (to connect vm to network): Hyper-V Virtual Switch Manager

    Both above tutorials in one complete step-by-step walkthrough at Ten Forums: Hyper-V virtualization - Setup and Use in Windows 10 (as I mentioned in my previous post Hyper-V works exactly the same way in Windows 8.1 and Windows 10, the Ten Forums Hyper-V tutorials can be used as such without any modifications in Windows 8.1 Pro).
      My System SpecsSystem Spec

  6. #6


    Posts : 3
    Win8.1Pro


    Finally had success. Used Disc2VHD to create my VM image and used Win8 Hyper-V.

    However, when I first started the VM I could not boot to it (windows loader not found) so after some research, I discovered I had not copied all my partitions (I had a hidden system partition). Once I had that partition, I was able to boot to the VM. However, I received the M$ popup notification that I had to reactivate. After research, I found a USB device not found and research indicated that constituted "new" hardware and therefore required Win7 license reactivation. After searching through my folders, files and old discs, I found my original Win7 key and was able to reactivate. The VM is now running smoothly (still missing the USB device though but that does not seem to be an issue).

    Thank you for the guidance provided. I will mark this as solved.
      My System SpecsSystem Spec

How do I run Win7Ultimate vitrual OS on Win8.1 Pro
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