Windows 10.qcow2 New! Jun 2026

The resulting windows10_compressed.qcow2 file is now fully optimized and ready to serve as a baseline template across your cluster. Deploying Your .qcow2 File on Proxmox VE

Windows does not include drivers for KVM's paravirtualized devices (virtio). You will need a driver ISO for the disk and network to function optimally. Download the latest stable virtio-win.iso from the Fedora repository.

: The .qcow2 (QEMU Copy-On-Write) format is highly efficient because it only grows in size as data is actually written to the disk, saving significant storage space on your host machine compared to fixed-size raw images. Windows 10.qcow2

Linux developers can run Windows-exclusive tools, test cross-platform apps, or run specific enterprise software natively at near-bare-metal speeds.

It supports internal compression, making the virtual disk easier to store and transfer. The resulting windows10_compressed

: You can compress the image to save additional disk space. Common Management Tasks 1. Shrinking (Sparsifying) the File

qemu-img convert -O qcow2 -c windows_10.qcow2 windows_10_compressed.qcow2 Use code with caution. Summary Checklist Recommended Setting Enables snapshots and thin provisioning Storage Bus VirtIO / VirtIO SCSI Near-native I/O throughput Cache Mode Accelerated write speeds CPU Type Exposes physical CPU extensions to VM Discard Enabled ( discard=on ) Reclaims host space when files are deleted Download the latest stable virtio-win

For testing or CI/CD pipelines, downloading a ready-made Windows 10.qcow2 saves hours. Sources include:

Enable discard='unmap' in your hypervisor storage settings. This allows Windows to pass defragmentation/TRIM commands back to the host, shrinking the QCOW2 file dynamically when files are deleted inside the VM.