If you have a Windows 7 installation in another format (like .vmdk from VMware or .vhd from Hyper-V), use the following "proper text" to convert it:
This review evaluates the use of , primarily for use in virtualized environments like QEMU/KVM, Proxmox, or GNS3. The Verdict: A Specialized Tool for Legacy Lab Environments windows 7 qcow2 file