Windows 10.qcow2: !!better!!

This allows multiple VMs to share a clean Windows 10 install.

qemu-img create -f qcow2 -b windows10_base.qcow2 -F qcow2 windows10_overlay.qcow2 Windows 10.qcow2

Unlike raw disk images ( .img ), the QCOW2 format enables: This allows multiple VMs to share a clean Windows 10 install

: If needed, you can convert the QCOW2 image to other formats like VDI (VirtualBox) or VMDK (VMware) using tools like qemu-img . Windows 10.qcow2