Can I upgrade from “full pack” OS/2 2.x to OS/2 Warp Version 3?
The short answer is no, that OS/2 Warp Version 3 with Win-OS/2 is a more convenient upgrade. However, if you are willing to reformat, you can purchase and install OS/2 Warp Version 3 to run DOS and OS/2 applications. If you install Windows before installing OS/2 Warp Version 3, you can also run Windows applications. IBM does not recommend such an upgrade without reformatting. Or, at the very least, you should completely remove all traces of OS/2 (with Win-OS/2) from a diskette boot.