DR DOS 3.31
DR DOS 3.31 is a version of DR-DOS, released on 28 May 1988. This version offers many features from MS-DOS 3.31. While it reports itself as PC-DOS 3.31, the internal Basic Disk Operating System (BDOS) kernel version is 6.0, due to it being a derivative of Concurrent DOS 6.0, where the project originates from.
