Windows 7 Qcow2 !!hot!! Link

Windows 7 does not natively support modern KVM VirtIO storage or network controllers. Without these drivers, the Windows installer will fail to detect your QCOW2 hard drive.

Virtualizing Windows 7 in QCOW2 format offers several technical advantages over traditional "RAW" disk images: Windows 7 Qcow2

If you already have a Windows 7 virtual machine in (.vdi) or VMware (.vmdk), you can convert it to QCOW2 easily using qemu-img . From VirtualBox: Windows 7 does not natively support modern KVM

The primary reason to choose Qcow2 for Windows 7 over VMDK (VMware) or VHDX (Hyper-V) is . Windows 7 Qcow2