Windows 10qcow2 ✭ 〈TESTED〉

virsh snapshot-create-as win10 clean-state "After Windows activation" virsh snapshot-revert win10 clean-state Create a base image that never changes:

qemu-img convert -f vmdk -O qcow2 windows10.vmdk windows10.qcow2 windows 10qcow2

qemu-img check -r all windows10.qcow2 If your Windows 10 qcow2 runs out of space: windows 10qcow2