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Easy and one via iso load. Just link to slimming down.
Windows 7 64-bit Ultimate Edition
Start the setup as normal but have the Virtio drivers required via ISO from RedHat. ..I chose to go with more tested drivers and downloaded Stable virtio-win iso.
Windows 10
Not supported officially yet. Windows 7 is more than fine given it won't drop support for next few years. Unofficial here,
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