Windows 8 and 8.1 Forums


Hardware virtualization BLOCKED - mistake by Dell ???

  1. #11


    Posts : 1,875
    Windows 10 Pro Prieview x64


    Quote Originally Posted by glnz View Post
    There is room only for one virtualization system running at a a time?
    Definitely this is so. At least only one that requires VT-x. You can run Hyper-V and VirtualBox if the VBox guest is 32 bit I believe. There are many many reports of this but for example https://social.technet.microsoft.com...er-hypervisors
    Quote Originally Posted by glnz View Post
    If so, why has Avast done what it's done? How come I'm the first person to notice?
    Don't know why, performance perhaps. Or sandboxing. The Avast issue has been found before though:
    https://feedback.avast.com/responses...ks-use-of-vt-x
    windows - VT Not Supported when Installing HAXM - Stack Overflow

    I don't use Avast so can't really comment but I guess you know the workaround - you need to disable it.

      My System SpecsSystem Spec

  2. #12


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


    Quote Originally Posted by adamf View Post
    Only one program can use the VT-x instructions. If Hyper-V is installed it will take control at boot (and then you can't run VMWare, VirtualBox or other hypervisors etc in 64bit mode - you get the same error).
    Quote Originally Posted by adamf View Post
    Quote Originally Posted by glnz View Post
    There is room only for one virtualization system running at a a time?
    Definitely this is so. At least only one that requires VT-x. You can run Hyper-V and VirtualBox if the VBox guest is 32 bit I believe.
    VirtualBox has no issues running on same computer than Hyper-V, even simultaneously. Here Vista in Hyper-V, Seven in VirtualBox:

    Click image for larger version

    The only issue is that when Hyper-V is enabled, VirtualBox can only run 32 bit guests.
      My System SpecsSystem Spec

  3. #13


    Hafnarfjörður IS
    Posts : 4,376
    Linux Centos 7, W8.1, W7, W2K3 Server W10


    Hi there

    1) a VM if it is connected in any way to a network or even shares drives with a machine that is connected to a LAN or Internet then you need to make the same security considerations as security on a REAL machine -- to the outside world it acts exactly as a REAL physical machine does.

    2) There is NO reason whatsoever to add 3rd party AV software on W8/8.1/10 --Windows defender will supply the service. It's built in to the OS - unlike W7 where there's no AV software built in which is why people use things like MSE which was a forerunner of the current security in later Windows OS'es. In fact adding 3rd party AV software to W8 etc is likely to CAUSE problems rather than resolve them.

    As to what virtualisation system you use - it's up to you. I know Kari likes HYPER-V but my issue with that is that it only runs on Windows. VBOX / VMWARE for all the possible negatives do at least run on LINUX too and I can run VM's without change whether my host is Windows OR LINUX - and I increasingly run my VM's from a LINUX Host these days - particularly as I can easily boot it from an external SSD, fire up a Windows VM and have a 100% portable system.

    Confirming Kari is correct though in that if you DO use HYPER-V AND another virtualisation system on Windows (in this case VBOX) then only 32 bit guests seem to work.

    VMWARE workstation 11 seems to know if HYPER-V is enabled so it won't installl until you disable HYPER-V. There is a script somewhere where you can change the configuration at boot time so you don't have to keep unnstalling and re-installing HYPER-V.

    Cheers
    jimbo
      My System SpecsSystem Spec

  4. #14


    Posts : 36
    Dual boot - Win 7 Pro 64-bit and Win 8.1 Pro 64-bit


    jimbo - thanks for your detailed info, which is very helpful. Good to know I don't need Avast in 8.1. And I appreciate your info re limitations of Hyper-V.

    I shall start for the first time soon to try to do virtualization - never saw it before. If there's a good guide for a noob like me (who's at least smart enough to get dual-booting going on his new Optiplex and to find this excellent forum), please suggest.

    Thanks.
      My System SpecsSystem Spec

  5. #15


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


    Some tutorials for Linux in Hyper-V:


    Both tutorials apply to Windows 8, 8.1 and 10.

    Kari
      My System SpecsSystem Spec

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Hardware virtualization BLOCKED - mistake by Dell ???
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