Top Best — Windows 7 Qcow2
The QCOW2 (QEMU Copy-On-Write) format is the gold standard for KVM and Proxmox environments. Unlike raw disk images, QCOW2 offers:
The "qcow2" format is the preferred virtual disk image for the KVM hypervisor
When the installer asks "Where do you want to install Windows?" and shows no drives, select . windows 7 qcow2 top
qemu-img create -f qcow2 -b win7-base.qcow2 win7-vm1.qcow2 qemu-img create -f qcow2 -b win7-base.qcow2 win7-vm2.qcow2
Standard Windows 7 installers do not include drivers for high-performance virtualized hardware (VirtIO). To ensure the installer "sees" the virtual disk, you must load these drivers during setup. The QCOW2 (QEMU Copy-On-Write) format is the gold
Inside that .qcow2 — QEMU Copy-On-Write — lies a full Windows 7 installation. The glossy taskbar. The translucent Aero Glass. The Start orb that actually opened a menu you could trust. Somewhere in that virtualized C: drive, there’s a user folder named after someone who might have hoped, in 2012, that this OS would last forever. There are bookmarks pointing to Flash-enabled websites. A saved game of Solitaire that hasn’t been touched since the last security patch — January 14, 2020.
The single most overlooked factor for speed is the cluster size . To ensure the installer "sees" the virtual disk,
qemu-system-x86_64 -m 4 G -smp 2 -accel kvm -cpu host,hv_relaxed,hv_spinlocks=0x1fff,hv_time \ -drive file=win7.qcow2,if=virtio \ -cdrom windows7.iso \ -drive file=virtio-win.iso,index=3,media=cdrom \ -vga qxl -device usb-tablet Use code with caution. Copied to clipboard 3. Installation Workarounds







