Windows 7qcow2 Best _verified_ -

Over time, qcow2 images can become "bloated" because they don't automatically shrink when you delete files inside Windows.

: Run powercfg -h off in an admin command prompt to reclaim disk space equivalent to your RAM size. Summary Table: The "Best" Specs Recommended Value Bus Type VirtIO SCSI Cache Mode none (for SSDs) or writeback (for HDDs) Preallocation metadata IO Mode native Drivers Latest VirtIO-Win (0.1.x series) windows 7qcow2 best

: You will need to load these during the Windows 7 installation process (via a mounted ISO) so the installer can "see" the qcow2 drive. Over time, qcow2 images can become "bloated" because

: SSDs and virtual disks do not need software-level defragging; it only adds unnecessary writes to the qcow2 file. : SSDs and virtual disks do not need

: Use this for the disk controller. It provides much lower CPU overhead than IDE.