MS-DOS 1.20

MS-DOS 1.20
Version of MS-DOS
Release date1981-12
86-DOS 1.14
Replaced by
MS-DOS 1.21

According to MS-DOS 2.11 source code, MS-DOS 1.20 is an unreleased internal version of MS-DOS.

Change log[edit | edit source]

1.20 12/31/81 Add time to FCB; separate FAT from DPT; Kill SMALLDIR;
              Add FLUSH and MAPDEV calls; allow disk mapping in DSKCHG;
              Lots of smaller improvements