virtualbox.org

I tried to install both AlmaLinux and RedHat 9 over VirtualBox 6.1.36 running on a Windows 10 (v10.0.19044) machine (i7-6600U), with Hyper-V enabled and disabled, it always fails with a kernel panic.

Attached are the VBox logs and the output of the failed installation.

This same setting works fine in AlmaLinux 8.

In fact Hyper-v is enabled.

00:00:05.389152 HM: HMR3Init: Attempting fall back to NEM: VT-x is not available
00:00:05.477456 NEM: info: Found optional import WinHvPlatform.dll!WHvQueryGpaRangeDirtyBitmap.
00:00:05.477558 NEM: WHvCapabilityCodeHypervisorPresent is TRUE, so this might work...

How were you disabling it?

Using Control Panel -> Programs and Features -> Enable or disable Windows features -> Remove Hyper-V from the list and reboot.

I tried both cases, Hyper-V enabled and disabled, both failed. And more curious, AlmaLinux 8 works fine even with Hyper-V enabled.

Regards.

Actually, an update: Disabling the Hyper-V feature from the Control Panel -> Programs and Features DOESN´T WORK.

Once I followed the instructions from viewtopic.php?f=25&t=99390, that really disabled Hyper-V and I was able to install and run AlmaLinux9.

However, it would be nice to be able to run it with Hyper-V enabled, as AlmaLinux8 runs with it with no issue, although, to be honest, this could easily be an issue of AlmaLinux instead of VirtualBox.

Indeed, it seems to be an AlmaLinux issue, not a VirtualBox one:

https://almalinux.discourse.group/t/ker ... stall/1379

Alvaro Palma wrote:Disabling the Hyper-V feature from the Control Panel -> Programs and Features DOESN´T WORK.

True. There's lots of things that use Hyper-V besides "Hyper-V". Glad you kept up the hunt and found a solution!

Thanks for sharing the information you've found. I suspect that you helped us discover a VirtualBox bug.

If you like to be adventurous, enable Hyper-V again and try if the following command helps:

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Edit:
Damn it, that happens when you type instead of copy!

Please try the following command instead:
If it does not help, and only then, additionally try: