Each child VM is ~1MB initially and only stores changes (deltas). Perfect for CI/CD or classroom labs.
| Feature | QCOW2 (Best for KVM) | Raw (Best Performance) | VHDX (Microsoft's Format) | | :--- | :--- | :--- | :--- | | | ✅ Yes (native) | ❌ No | ✅ Yes (via Hyper-V) | | Sparse Allocation | ✅ Yes (small initial file) | ❌ No (allocates full size) | ✅ Yes | | Performance | Good (minor overhead) | Excellent | Good (but requires conversion) | | Portability | Native to QEMU/KVM | Universal | Native to Hyper‑V | | Compression | ✅ Yes (zlib) | ❌ No | ✅ Yes | | Recommended Use | Daily use, development, snapshots | High‑performance servers, databases | Microsoft / Hyper‑V environments |
Once Windows is installed and you've successfully reached the desktop, the next step is to finalize the driver setup. Install all remaining drivers from the VirtIO ISO, particularly the network ( NetKVM ) and graphics ( qxl ) drivers. Also, run the virtio-win-guest-tools installer found on the ISO. This tool installs the QEMU Guest Agent, which greatly improves the integration between your host Linux system and the Windows VM. windows 11 qcow2 download best install
Microsoft distributes official, pre-configured virtual machines for developers. These environments include visual studio, developer tools, and an enterprise evaluation license valid for 90 days.
#!/bin/bash echo "Downloading Windows 11 ISO (requires user consent)" wget -O /tmp/win11.iso "https://software.download.prss.microsoft.com/db/Win11_23H2_English_x64v2.iso?t=..." # ^^ Real link requires a browser session. Instead, manually download ISO first. Each child VM is ~1MB initially and only
Creating your own QCOW2 image is the best practice. It ensures the OS is clean, updated, and tailored to your specific hardware requirements. Step 1: Convert an Official Microsoft VM (Fastest Method)
Building your own qcow2 image ensures it is clean, secure, and fully updated. Install all remaining drivers from the VirtIO ISO,
If you want to bypass Microsoft's mandatory account login during the initial boot, I can provide the step-by-step instructions for .