Windows 10.qcow2 May 2026

Solution: Install the virtio-win-guest-tools inside Windows. Also, allocate dedicated memory to the virtual GPU in virt-manager (e.g., 256MB of Video RAM).

Solution: Your VM switched from IDE to VirtIO without preparing the registry first. Always add the VirtIO driver before changing the disk controller. Windows 10.qcow2

qemu-img convert -f raw windows10.raw -O qcow2 windows10.qcow2

qemu-img create -b Windows10_base.qcow2 -f qcow2 Windows10_work.qcow2

Now Windows10_work.qcow2 starts at near-zero size, storing only changes. qemu-img convert -f raw windows10