Windows 10.qcow2 -

Then inside Windows: open → extend partition.

The format supports built-in compression to save space and optional AES encryption to secure the virtual hard drive. Level1Techs Forums Migrate from VirtualBox to libvirt - Think In Geek Windows 10.qcow2

cluster size to your recordsize (e.g., 8K) can triple your performance. Discard/Trim: To keep your image from growing indefinitely, enable discard=unmap Then inside Windows: open → extend partition