It seems there might be a small typo or confusion in your query.
All while the “image” sat on my NVMe drive, taking just 1.8 GB on disk. windows xpqcow2
: You can create "freeze-frame" points for your Windows XP state. If a legacy application crashes or a virus infects the guest, you can roll back to a clean snapshot in seconds. It seems there might be a small typo
Once your image is set up perfectly, you can set the QCOW2 file to read-only on the host to prevent malware from persisting. Conclusion windows xpqcow2
qemu-system-x86_64 -hda windows_xp.qcow2 -m 1024 -vnc :0