vmware - Switch off Hyper-V without disable functionality in Windows 8.1

06
2014-04
  • Silverstorm

    Since I must use also VMWare I need to temporarily turn off Hyper-V

    In Windows 8 I used

    bcdedit /set hypervisorlaunchtype off

    to disable hypervisor, and:

    bcdedit /set hypervisorlaunchtype on

    to re-enable it.

    In this way, after a normal reboot, VMware see Hyper-V as disabled and works fine

    Unfortunately in Windows 8.1 using this command, VMWare doesn't start because see Hyper-V as enabled and I must use

    dism.exe /Online /Disable-Feature:Microsoft-Hyper-V

    and 

    dism.exe /Online /Enable-Feature:Microsoft-Hyper-V /All

    This, unlike the previous way, doesn't simply turn-off Hyper-V, but disable the whole functionality that every time is unistalled and reinstalled.

    Is there any other way to switch off-on Hyper-V without using dism?

    • Answers
  • Silverstorm

    The problem was caused by a setup corruption occurred after the upgrade, reinstalling both VMware and Hyper-V, the solution to disable and re-enable the Hypervisor launch, still works.


    • Related Question

    windows 8 - Running Hyper-V and VMWare together
  • Shiki

    I have two virtualization software on one of my laptops which is dedicated to Windows 8 development.
    A VMWare for generic virtualization and the Windows 8 like Hyper-V for the WP8 SDK.

    Unfortunately these softwares don't like each other.
    Is there a way to get them play along?

    The exact problem is that if I install the SDK, VMWare won't even update or run.
    There is only one way to make them work. Switch Hyper-V on and off. Which is one restart all the time.


    • Related Answers
  • Andrew J. Brehm

    Here's how you do it:

    Windows Phone 8 SDK on a Virtual Machine with Working Emulator

    This assumes that you want to run Hyper-V within VMware. Apparently VMware, using its binary translation thingamajig, can completely virtualise an x86 CPU, although slowly.

    I don't think you can run run VMware in a Hyper-V VM (which is what Windows is when Hyper-V is installed and you haven't modified the boot menu).

    However, you can modify the boot menu, boot into Windows without Hyper-V and run VMware that way.

    Update: Found the site that explains how to do that.

  • Brian

    From the VMWare Workstation 9 Release notes:

    Nested Virtualization

    Workstation 9 improves the implementation of virtual Intel VT-x/EPT or AMD-V/RVI extensions. This allows users to run ESX as a guest OS and run a 64-bit operating system nested in ESX using less system resources.

    Note: If you enabled the virtualization extensions in a virtual machine running on Workstation 8, you might need to disable the extensions, upgrade the virtual machine to the latest virtual hardware version (compatible with Workstation 9), and then re-enable the extensions.

    Hyper-V

    Hyper-V has been added to the Workstation 9 guest operating system list. This enables customers to run Windows 8 with Hyper-V enabled, or install Hyper-V Server. This can be used for educational purposes or for building prototype Hybrid Clouds. This feature is NOT SUPPORTED and probably never will be. Microsoft does not support nesting of their hypervisor which makes it extremely difficult - if not impossible for VMware to fix issues that may occur in this configuration. For this reason, this capability has been implemented purely to see if we could do it!

    CAUTION: DO NOT ATTEMPT TO RUN HYPER-V ON A VIRTUAL MACHINE IN PRODUCTION.

  • Joel Coehoorn

    VMWare and Hyper-V are both implementations of a software construct known as a hypervisor. Modern computer hardware has special optimization features for hypervisors to support improved performance. These are special circuits built into the cpu and motherboard of your computer.

    Modern hypervisor software, such as VMWare and Hyper-V, depend and rely on this special hardware. If one system is using that hardware, the other cannot.

    In short, there is no way to use both VMWare and Hyper-V at the same time.