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How to force VirtualBox to use native virtualization hardware
Posted: 5. Sep 2019, 19:23
by Ricjames
I am currently trying to boot up a VM with vagrant and I am having an issue where VirtualBox is using NEM mode(green turtle) instead of the native hardware virtualization(blue chip), even though hyper-v is completely disabled and VT-x is enabled through the BIOS. Once the VM boots up, the screen stays black. Is there anything I am missing in order to get this to work?
I am running the Ubuntu/bionic64 os
Re: How to force VirtualBox to use native virtualization hardware
Posted: 5. Sep 2019, 19:26
by scottgus1
Usually we don't handle Vagrant-edited Virtualbox, beacuse Vagrant, well, changes things....
But this is in your log:
00:00:05.500287 HM: HMR3Init: Attempting fall back to NEM: VT-x is not available
00:00:05.690888 NEM: WHvCapabilityCodeHypervisorPresent is TRUE, so this might work...
So Hyper-V isn't fully disabled yet. See
I have a 64bit host, but can't install 64bit guests Carefully go through each command in the 2nd & 3rd posts. Based on my perusal of successful fixes for this problem, the silver bullet appears to be the "bcdedit" command & complete power-down in post 2 point 1.