I didn't join the PC world until 1994 when Windows 3.x/DOS 6.x were new. Even from my corner of the computer universe I heard about how "bad" DOS 4.0 was initially. OS/2 Museum does a detailed history of it coinciding with its source release. #ComputerHistory #history #Retrocomputing https://www.os2museum.com/wp/dos/dos-4-0/