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Windows 10qcow2 ((new)) May 2026

To set up a Windows 10 QCOW2 image for QEMU/KVM, you need to create a virtual disk, mount the Windows ISO, and—crucially—include VirtIO drivers so Windows can recognize the QCOW2 disk during installation. 1. Create the QCOW2 Virtual Disk

Mastering Windows 10 QCOW2: The Ultimate Guide to Virtualization windows 10qcow2

5. Copy-on-Write Cloning

Select Enter System Out-of-Box Experience (OOBE) and check Generalize. Select Shutdown as the Shutdown Option. To set up a Windows 10 QCOW2 image

Part 7: Common Problems & Solutions

7.1. "Boot Failed: No Bootable Device"

Your QCOW2 file is fine, but UEFI/BIOS is wrong. Windows 10 needs UEFI + Secure Boot (or legacy BIOS). In virt-manager, go to Overview → Firmware: change to UEFI x86_64. Also add an OVMF (Open Virtual Machine Firmware) package. Create a “base” Windows 10 qcow2 (sysprepped), then

Disk Discard: Enable the discard mount option to allow the guest OS to tell the QCOW2 file to shrink when files are deleted inside Windows. Converting ISO or VMDK to QCOW2

Limitation: Performance degrades with many internal snapshots.

Late one night, an automated Cron job executed a routine script. It requested a clean spin-up.