Virtualbox and Hyper V

Discussions related to using VirtualBox on Windows hosts.

Virtualbox and Hyper V

Postby mikejj101 » 18. Oct 2018, 23:26

Trying to load virtual machine into Virtualbox on laptop that has Hyper V running - cannot load Vista from disk - produces this error-
Failed to open a session for the virtual machine VistaVirt.

Raw-mode is unavailable courtesy of Hyper-V. (VERR_SUPDRV_NO_RAW_MODE_HYPER_V_ROOT).

Result Code: E_FAIL (0x80004005)
Component: ConsoleWrap
Interface: IConsole {872da645-4a9b-1727-bee2-5585105b9eed}

Is this because Hyper V is installed ?
Any ideas please?
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Re: Virtualbox and Hyper V

Postby socratis » 19. Oct 2018, 00:04

mikejj101 wrote:Is this because Hyper V is installed ?
Yes, exactly.

mikejj101 wrote:Any ideas please?
Uninstall Hyper-V, it's stealing exclusively your VT-x capabilities.

The trick with VT-x is that it has to be shared, since it's "only one" available slot for its use. For example, VMware and VirtualBox do not use VT-x at the same time, but rather take turns. To put it simply, every program that uses VT-x should do this: VT-x lock, execute, VT-x unlock. This way other processes can use VT-x in turns.

On the other hand, Hyper-V permanently takes over VT-x and doesn't let anyone else use it. If a program uses VT-x from the moment it is loaded, and doesn't let go till the moment it dies, you have a problem. So, please complain to Microsoft about that.
If you obfuscate any information requested, I will obfuscate my response. These are virtual UUIDs, not real ones.
Do NOT reply with the "QUOTE" button, please use the "POST REPLY", at the bottom of the form.
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Downloaded Manual will not load into VirtualBox

Postby mikejj101 » 30. Aug 2019, 12:54

Hi all,
I'm attempting to load a workshop manual that I purchased.
The format of the manual is a ,ova file.
When I attempt to open the file in VirtualBox I get the following error:-

Failed to open a session for the virtual machine Citroen_2013.

Raw-mode is unavailable courtesy of Hyper-V. (VERR_SUPDRV_NO_RAW_MODE_HYPER_V_ROOT).

Result Code: E_FAIL (0x80004005)
Component: ConsoleWrap
Interface: IConsole {872da645-4a9b-1727-bee2-5585105b9eed}

Anyone got any idea why it will not open?

Thanks

Mike
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Re: Downloaded Manual will not load into VirtualBox

Postby mpack » 30. Aug 2019, 12:56

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Re: Downloaded Manual will not load into VirtualBox

Postby mikejj101 » 30. Aug 2019, 15:04

Thanks for the reply.

I've disabled Hyper V on PC but error message continues.
Last edited by mikejj101 on 30. Aug 2019, 16:34, edited 1 time in total.
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Re: Downloaded Manual will not load into VirtualBox

Postby mpack » 30. Aug 2019, 15:20

The error message is telling you that Hyper-v is enabled, so if you still get that message then Hyper-v is not disabled. It is not a mistake. Read FAQ: I have a 64bit host, but can't install 64bit guests, especially the last two posts.
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Re: Virtualbox and Hyper V

Postby socratis » 31. Aug 2019, 11:58

@mikejj101
I merged your current question, with the exact same one that you had from 2018-10-19. Keep in mind that according to the forum rules, duplicate posts are not allowed.
If you obfuscate any information requested, I will obfuscate my response. These are virtual UUIDs, not real ones.
Do NOT reply with the "QUOTE" button, please use the "POST REPLY", at the bottom of the form.
socratis
Site Moderator
 
Posts: 26128
Joined: 22. Oct 2010, 11:03
Location: Greece
Primary OS: Mac OS X other
VBox Version: PUEL
Guest OSses: Win(*>98), Linux*, OSX>10.5


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