version 6.1.34 VM Windows 10 fails to start if multiple CPU's are enabled

[the_iron]

Hi All,
on my new pc Acer Aspire A515-45 windows 10 Home when i try to change the settings number of cpu of my windows 10 VM it fails to start, hanging up at boot...
I try to disable hipervisorlaunchtype with

Code: Select all

bcdedit /set hypervisorlaunchtype off

but nothing changes...

on old pc Fujitsu Lifebook NH532 with version 6.1.24 there is no problem.

could anyone help me?
thanks

[mpack]

I try to disable hipervisorlaunchtype with

Code: Select all

bcdedit /set hypervisorlaunchtype off

but nothing changes...

That command doesn't disable anything, it simply modifies a boot script. So did you restart the PC (from full power down) so that the boot changes would take effect?

I would seem not, since the log still shows Hyper-v as enabled.

00:00:02.770237 HM: HMR3Init: Attempting fall back to NEM: AMD-V is not available
00:00:02.781887 NEM: info: Found optional import WinHvPlatform.dll!WHvQueryGpaRangeDirtyBitmap.
00:00:02.781948 NEM: WHvCapabilityCodeHypervisorPresent is TRUE, so this might work...

[the_iron]

thanks very much, with reboot it works...
but why i need to disable Hyper-V for running vm with more then one cpu, in the documentation (https://docs.oracle.com/en/virtualizati ... rv-support) report VirtualBox +Hyper-V as experimental feature but not mention this limitation.

[mpack]

Note the word "experimental". The experiment failed in your case.