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-1 votes
2 answers
488 views

Use .qcow2 VM file format for VirtualBox

VirtualBox, supports several other file formats, but no .qcow2 format for the time being. The Virtmanager, in turn supports the current open source .qcow2 format, but not the outdated .qcow format. ...
Alfred.37's user avatar
  • 137
0 votes
0 answers
485 views

Exploring QEMU/KVM: Performance and Setup Comparison on Windows 11 vs. Linux

I have used QEMU/KVM in Fedora, and it was superior in comparison to VirtualBox or the free version of VMWare. Recently, I wanted to dual-boot Linux with Windows, but I couldn't due to battery ...
Neptune's user avatar
  • 153
0 votes
0 answers
722 views

QEMU-KVM Freezes on Guest Reboot - How do I fix this?

I haven't tested it on a Linux guest, but on a Windows 10 virtual machine guest most reboots freeze in the middle of starting back up. This has never happened with me on VirtualBox, and I wouldn't ...
Asteroid's user avatar
1 vote
1 answer
3k views

"Could not access KVM kernel module" on Ubuntu Virtual Machine

I am trying to run a program that uses QEMU on an Ubuntu VM in VirtualBox hosted on a Windows 10 computer with an AMD CPU. When I try to run the program it gives me this error: Could not access KVM ...
Abel Philips's user avatar
0 votes
1 answer
1k views

Qemu - How to specify HDD file

I'm trying to install ESXI on qemu a VM. During the installation I don't see esxi.qcow2 file size being increased. I'm not sure if its writing to the disk file or not. esxi.qcow2 file size is still ...
user630702's user avatar
4 votes
1 answer
2k views

Differences in networking between QEMU/KVM and VirtualBox

I noticed the following differences in the networking experience between QEMU/KVM (used through libvirt) and VirtualBox: For anything else than usermode or manual networking, QEMU/KVM needs a virbr0 ...
Zoltan's user avatar
  • 476
2 votes
2 answers
3k views

When making a VM, why would I want to not pass it all my cpu cores?

(I'm using xcp-ng/xen as my hypervisor but general question as I also wonder this about qemu/kvm and virtualbox when I use them) whenever I make a VM, I have an option to give it as many cores as I ...
user863492's user avatar
1 vote
1 answer
2k views

Set UUID when generating a VMDK image from a raw image using qemu-img

It is possible to convert a raw image to a VMDK image with qemu-img like this: qemu-img convert -O vmdk "$_raw" "$_vmdk" I know it is possible to set UUID of the generated VMDK ...
Mateusz Piotrowski's user avatar
0 votes
0 answers
755 views

Running Virtual Machine with 640x480 and 16-bit color depth

To run a very old windows game in a virtual machine on ubuntu i have to run on windows xp with a resolution of 640x480 and 16-bit color depth. i can change that manually every time i start the vm but ...
fmeier's user avatar
  • 331
5 votes
2 answers
6k views

How to clone physical system into a virtual machine?

I have a full system installed on my PC. (Arch Linux on a laptop) I need to test, edit, tweak this system (bootloader too) in a safe way because it is my workstation. Is there a way to easily** ...
mattia.b89's user avatar
  • 3,288
-8 votes
1 answer
2k views

Does Docker work with VirtualBox but not with KVM/QEMU?

Docker can creat virtual machines to be used as nodes in swarms. The machine drivers contains VirualBox but no KVM/QEMU. Does it mean that virtual machines created by KVM/QEMU can't be used as ...
Tim's user avatar
  • 103k
4 votes
1 answer
498 views

What are equivalences to QEMU/KVM in VirtualBox?

Are QEMU and KVM both kernel modules? In VirtualBox, what are the equivalences to these kernel modules? Thanks.
Tim's user avatar
  • 103k
3 votes
1 answer
7k views

Can I run a .vdi file for Windows 8.1. virtual machine in KVM/QEMU or VMM?

Can I run a .vdi file for Windows 8.1. virtual machine in KVM/QEMU or VMM? Do I need to convert the file from .vdi to some format familiar to KVM/QEMU? What are the steps, if possible? I have ...
Tim's user avatar
  • 103k
1 vote
1 answer
4k views

What is the relation between Virtual Machine Manager and KVM/QEMU?

What is the relation between Virtual Machine Manager and KVM/QEMU? The Wikipedia links says In computing, the Red Hat Virtual Machine Manager, also known as virt-manager, is a desktop virtual ...
Tim's user avatar
  • 103k
2 votes
0 answers
804 views

Virtualization - Linux host - running Adobe After Effects with hardware acceleration (using OpenGL)? [closed]

Introduction Thinking about a laptop for graphic work, using After Effects (and other Adobe software). As there is to use those proprietary software (we are aware of open source alternatives like the ...
brunetton's user avatar
  • 263

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