.qcow2 is a virtual disk image format used by QEMU, an open-source emulator and virtualizer. The format supports a variety of features like compression, encryption, and dynamic image resizing, making it a popular choice for virtual machine (VM) storage.
A file (Service Pack 1 is highly recommended). windows 7qcow2 2021
The conversion process can vary depending on your starting point. Here, we'll cover converting a Windows 7 VM from a different format to QCOW2. and dynamic image resizing
qemu-img create -f qcow2 windows7.qcow2 40G windows 7qcow2 2021