Microsoft Validation OS
> Validation OS boots into a Command Line environment to increase reliability on the factory floor and supports running Win32 appsThis is the kind of comment that probably will get downvoted here, but it feels pretty weird to be old enough to remember when booting to a command line was normal, and now it's seen as a feature. It's easy to forget when Windows was the shell, not the OS, and that it was simpler and easier on the system to boot to a minimal state and allow the user to escalate from there.