Microsoft's official Windows Update servers for Windows 7 are painfully slow and may fail. Use the Simplix Update Pack (Legal grey area: use for legacy compatibility) or WSUS Offline. Alternatively, manually install the "Convenience Rollup" (KB3125574) followed by the Monthly Rollup for December 2020 (KB4598279).
qemu-img create -f qcow2 windows7.qcow2 40G
| Feature | Specification / Status in 2021 | | :--- | :--- | | Disk Format | QCOW2 (v2/v3) | | Partition Style | MBR (Standard) or GPT (Modified/Hack) | | Controller Driver | VirtIO SCSI / VirtIO Block (Required for speed) | | Display Adapter | QXL (SPICE) or Passed-through PCIe GPU | | Network Driver | VirtIO NIC (E1000 fallback available but slow) | | OS Support Status | Post-EOL (No free official support; security risks mitigated via VM isolation) | | Snapshot Strategy | Critical (Used as a safety net due to lack of OS patches) | windows 7qcow2 2021
qemu-img create -f qcow2 windows7.qcow2 40G
You can choose a size (e.g., 40 GB). QCOW2 grows as needed. Microsoft's official Windows Update servers for Windows 7
To convert your Windows 7 installation into a QCOW2 image, you'll need a few tools and pieces of information: | Feature | Specification / Status in 2021