virtualbox.org

Okay, kind of an open ended subject line, but here goes.

I'm attempting to install CentOS 8.2 into a virtual machine using VirtualBox (newest version as of today) on a Windows 10 host. Extensions installed. I did notice that when I made the machine, it uses a Red Hat template as no explicit CentOS one exists.

When I attempt to start this having downloaded the most recent ISO, I get the first text screen noting "install CentOS 8 or test in live mode". Regardless of what option I choose next, I get a black screen with a single top-left line for text that never proceeds. It essentially locks.

CPU that I am running is an older 2700k with Virtualization options turned on if that helps as well, and I've attached the vbox.log file. Video card is a GeForce but I am attempting to do the installation/work through an RDP window. We're not needing high-end graphics here, it's meant to be a "server" use case.

What silly thing am I doing wrong that's causing Virtualbox to not like this install? Thanks!

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: The choice of animal is appropriate: Your guest is running, just really slow. Or it might guru-meditate or crash. 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 () 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. Look into I have a 64bit host, but can't install 64bit guests, 2nd post, points 2 & 3 and ensure that none of these things are running.

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.

Your Virtualbox should be running now. If the green turtle still appears and the tell-tale lines are in the log, try all the steps again. If you don't get the standard virtualization icon, post back exactly what you did and we'll try to help some more.

For further info, see https://www.tenforums.com/tutorials/139 ... puter.html

Looking better! There's some stuff I'd like to run eventually on Hyper-V (namely WSL 2), but that can wait, this will get used a hell of a lot more. Thanks for your help!