Instead, AtlasOS uses a "Playbook" system that modifies a clean, existing Windows installation. 1. Download Official Windows 10 ISO
Let me start by searching for "Atlas OS Windows 10". Hmm, it's possible they meant Microsoft Windows 10, but "Atlas OS" isn't an official Microsoft product. Maybe they confused it with another OS or a related tool. Alternatively, could it be a custom firmware or a different OS distribution? atlas os windows 10 iso link