: The QCOW2 file is small, but it expands as the system writes logs and configurations. Conclusion
: 12GB to 16GB (though it can sometimes boot on 8GB with limited features).
: The file format. QCOW2 is the native format for QEMU/KVM and is widely used because it only takes up the disk space actually used by the OS, rather than the full allocated size. Use Cases for Version 6.1.3