Installing QEMU/Virt-Manager On Arch Linux
First update your system :
sudo pacman -Syu
Install the required packages :
sudo pacman –S qemu qemu-arch-extra virt-manager ebtables bridge–utils dmidecode
sudo systemctl start libvirtd
sudo systemctl enable libvirtd
sudo systemctl status libvirtd
sudo nano /etc/libvirt/qemu.conf
user="root"
group="root"
Ctrl+X to exit
Y to save
Enter to confirm
sudo systemctl restart libvirtd
sudo systemctl status libvirtd
If everything is active and running without any error you can continue and start creating your VM.