Windows 7 Qcow2 [portable]
Qcow2 is a virtual disk image format that allows for efficient and flexible virtualization. It is a copy-on-write (CoW) format, which means that changes to the image are stored separately from the original data. This allows for efficient use of storage space and fast creation of snapshots.
The default is 64KB for Qcow2; do not exceed 128KB for Windows 7, as it expects 4KB/8KB sector alignment.
have reported "Blue Screen of Death" (BSOD) errors, specifically error 0x00000007b Windows 7 Qcow2
You can compress the image for easy transport or encrypt it for security. Technical Requirements
Launch the VM using the ISO as the boot source. For better performance on Linux hosts, ensure kvm acceleration is enabled. Qcow2 is a virtual disk image format that
qemu-system-x86_64 -hda windows7.qcow2 -m 2048 -smp 2
Windows 7 doesn’t natively have virtio drivers. To get better performance: The default is 64KB for Qcow2; do not
Windows 7 can feel sluggish in a virtual environment without specific tuning: VirtIO Everything : Use VirtIO for Disk (VirtIO-blk) Network (virtio-net)