For near-native performance on KVM/QEMU, you must load VirtIO drivers during the installation process so Windows can recognize the .qcow2 disk. Feature Overview: Why Use .qcow2? Download Windows 10 Disc Image (ISO File) - Microsoft
Microsoft provides free "VM snapshots" for IE11 and Microsoft Edge testing. You can download these directly from the Microsoft Developer portal. While they usually come in .ova (VirtualBox) or .vhdx (Hyper-V) formats, you can convert them in seconds! Windows 10.qcow2 Download