> Is the book labelled as fiction? > I understand that early versions of NT emitted error messages identifying itself as OS/2. Did the book explain when NT bec

> Is the book labelled as fiction? > I understand that early versions of NT emitted error messages identifying itself as OS/2. Did the book explain when NT became "brand new OS from scratch". Windows NT started out as Microsoft's effort to do OS/2 NT. There was a 32-bit Microsoft OS/2 2.0 (distinct from IBM OS/2 2.0), and OS/2 NT was to be OS/2 3.0. OS/2 NT wasn't rebranded Windows NT until Windows 3.0 eliminated OS/2 from relevance, and with it, the Microsoft/IBM partnership. That's when IBM introduced their own (very nice) OS/2 2.0 and started a years long effort to eliminate Microsoft code from the OS/2 codebase (and the Microsoft copyright message from all over the UI)