Windows 7qcow2 Link Here

Supports internal compression to save host disk space.

The Ultimate Guide to Using Windows 7 QC0W2 Images in Virtual Environments windows 7qcow2

Windows 7 in QCOW2 format provides a flexible, lightweight way to keep legacy environments alive. Whether you are running it on a Proxmox server or a local Ubuntu desktop, proper driver integration and snapshot management are the keys to a smooth experience. Supports internal compression to save host disk space

Use a private bridge or NAT to prevent the VM from scanning your local network. windows 7qcow2

Secure your legacy data directly at the disk level. How to Create a Windows 7 QCOW2 Image