Microsoft Validation OS
> Validation OS boots into a Command Line environment to increase reliability on the factory floor and supports running Win32 apps<p>This 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.