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Windows 8 Virtualization issue with USB connected Drive RRS feed

  • Question

  • I have a 3.0 USB connected SSD drive.  I get the same error when I attempt to Create a VM or attach a vhd that reside on the USB connect SSD drive.

    Is there something I am missing or doing wrong?

    Thursday, August 23, 2012 3:14 PM

All replies

  • Not all USB devices mount in a way that the hypervisor can properly use it.

    This is not a new issue.

    Many USB devices mount in th euser security space and therefore the hypervisor cannot use it as the hypervisor is in the Local System security context.

    There have been at least two other recent threads very similar to this.  In the case of type-2 hypervisors thi si generally not an issue as they sit on top of the operating system.  (VirtualBox, VMW Workstation for example).

    Try to create virtual disks through Disk Manager and see if you have the same issues.

    Similar thread here:

    http://social.technet.microsoft.com/Forums/en-US/w8itprovirt/thread/20da7ff7-05a7-4085-8e67-258f11755f3d/


    Brian Ehlert
    http://ITProctology.blogspot.com
    Learn. Apply. Repeat.
    Disclaimer: Attempting change is of your own free will.

    • Proposed as answer by Vincent Hu Thursday, August 23, 2012 4:02 PM
    Thursday, August 23, 2012 3:53 PM
  • Is there a method to change the way a USB drive is mounted?
    Thursday, August 23, 2012 9:21 PM
  • In the end, how the disk mounts is all about how the manufacture defines it for the device and driver.

    Like I mentioned, I have seen USB disk devices that mount properly at the machine level to allow this.  But most commonly USB devices exist within the User context.

    (this also helps define user level separation to support services such as Remote Desktop - keeping your USB devices within your user session and not risking exposing it to another user).

    Through watching the Hyper-V forums over time it seems that USB drives exposing themselves in a way that the system can properly access them is a minority of devices.


    Brian Ehlert
    http://ITProctology.blogspot.com
    Learn. Apply. Repeat.
    Disclaimer: Attempting change is of your own free will.

    Thursday, August 23, 2012 9:25 PM
  • I can create vhd and vhdx but I cannot create a VM or attach one of the vhd or vhdx's to a VM (creating the VM on the C: drive)...

    so is there a method to change the way the USB drive is mounted? Is there an hardware list so that I can get a USB case that uses the proper method for mounting the USB Drive?

    Thursday, August 23, 2012 9:27 PM
  • The other caveot here is that you cannot mount or use a VHD created at the root of the drive (C:\ or D:\) the VHD must at least being within a folder.

    ie. C:\myVM or D:\MyVM

    If you are past this, then it is a USB driver issue, and for all I know a new feature to help secure the system from rogue USB type things that might try to access system space.


    Brian Ehlert
    http://ITProctology.blogspot.com
    Learn. Apply. Repeat.
    Disclaimer: Attempting change is of your own free will.

    Thursday, August 23, 2012 9:35 PM
  • my laptop has a 100GB hard drive (SSD)...

    I need to use an external (USB) drive to store the VHD's...  If it is a feature that it cannot be done, then I need to know that? if it is a manufacture driver issue then I need to know what manufacture has a driver that allows this?

    where do I go to get that list of manufactures?

    Thursday, August 23, 2012 10:05 PM
  • will windows server 2012 have the same issue?
    Thursday, August 23, 2012 10:11 PM
  • BrianEH ? no more comments all the sudden?

    Friday, August 24, 2012 5:31 PM
  • I have no more answers.

    The history of this comes from Server 2008 and Hyper-V and folks wanting to do the same thing.

    The kernel is shared, I expect the same behavior.


    Brian Ehlert
    http://ITProctology.blogspot.com
    Learn. Apply. Repeat.
    Disclaimer: Attempting change is of your own free will.

    Friday, August 24, 2012 6:11 PM
  • well I was able to do it in 2008 R2...  Same devices...

    improved security in windows 8.

    OK.

    Friday, August 24, 2012 6:29 PM