Guru Meditation Error

Discussions related to using VirtualBox on Windows hosts.
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ceStudent
Posts: 1
Joined: 18. May 2020, 01:33

Guru Meditation Error

Post by ceStudent »

I'm getting a critical error from guru meditation whenever I try to start my Kali Linux vbox machine. Over the past 5 days, I've been made a lot of my changes to my system and trying to free up space on my C drive. I suspect I accidentally deleted something I shouldn't have, but it could be something else. As suggested by the message, I've attached the contents of my Vbox.log file and the image image file Vbox.png. Any help is appreciated.
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VBox.png
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mpack
Site Moderator
Posts: 39134
Joined: 4. Sep 2008, 17:09
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Mostly XP

Re: Guru Meditation Error

Post by mpack »

00:00:09.739889 Host RAM: 8069MB (7.8GB) total, 2274MB (2.2GB) available
...
00:00:10.082811 RamSize <integer> = 0x0000000080000000 (2 147 483 648, 2 048 MB)
00:00:10.083383 VRamSize <integer> = 0x0000000008000000 (134 217 728, 128 MB)
That's noodging rather close to saturation. You probably need to free up RAM on the host if you want to run this VM.

In a similar vein, you have a 2 core host, and you assigned 2 cores to the VM. You don't really have much choice, but that too is overcommittment of resources, so you can expect conflicts and glitches sometimes.
scottgus1
Site Moderator
Posts: 20945
Joined: 30. Dec 2009, 20:14
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Windows, Linux

Re: Guru Meditation Error

Post by scottgus1 »

Your log contains these lines:
{timestamp} HM: HMR3Init: Attempting fall back to NEM: VT-x is not available
{timestamp} NEM: WHvCapabilityCodeHypervisorPresent is TRUE, so this might work...

You might notice in the guest window's Status Bar the green turtle: Image The choice of animal is appropriate: Your guest is running, just really slow. This is because a service that uses Microsoft Hyper-V is running on your host PC. Normally Hyper-V blocks Virtualbox. But your PC is of the type and OS where Virtualbox can attempt to run the guest using the Hyper-V engine. This arrangement is still being developed and isn't 100% yet.

If VirtualBox is running without Hyper-V enabled, and nothing else is interfering with hardware virtualization (VT-x / AMD-V), then the usual virtualization icon (Image) will be seen in the Status Bar.

To turn Hyper-V off completely, do this:

1. Shut down all programs. You will have to reboot your host.

2. See I have a 64bit host, but can't install 64bit guests. This tutorial has a couple more things to look for in step 2. Be sure these are all turned off.

3. Find the Command Prompt icon, right click it and choose Run As Administrator.

4. Enter this command:
bcdedit /set hypervisorlaunchtype off
5. Enter this command:
shutdown -s -t 2
6. When the computer turns off, unplug it for 20 seconds. Then plug it in again and boot up Windows 10.

If your Virtualbox does not start successfully, zip and post another vbox.log. For further info, see https://www.tenforums.com/tutorials/139 ... puter.html
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