[BoiledCabbage]

But again in the Windows ME vs WinNT/Windows2000 case it wasn't a re-write. It was improving an existing product and using it in a consumer space.

[sgerenser]

But Windows NT itself was a rewrite not an evolution of Windows 3.1.

[wolfgke]

Windows NT wasn't a rewrite of Windows 3.1, but an attempt of Microsoft to create a modern workstation OS that is in a completely different product category than DOS/Windows 3.1.