Creating new disk image This will be the main HDD in the virtual image, so make sure to give it as much space as you’ll need. Since we’re building a kvm image, we can use a qcow2 format for disk images. Qcow2 is an expandable image format, so it’ll only take as much storage space as it’s actually used within the image. $ kvm-img create -f qcow2 win-2k3.img 20G OS Installation Get the iso file of t