Altos MS-DOS 2.11, an Altos OEM version of MS-DOS 2.11 for the ACT-86C.Version 2.0 (OEM), First version to support 5.25-inch, 360 kB floppy drives and diskettes.It was also the first version to support folders. Version 1.25 (OEM) – basis for non-IBM OEM versions of MS-DOS, including SCP MS-DOS 1.25ĭOS 2.x adds support for sub-directories and larger (as in 10 MB) disks, FAT16, user installable device drivers, and tree-structure filling system.Version 1.24 (OEM) – basis for IBM's Personal Computer DOS 1.1.Zenith Z-DOS 1.19, a Zenith OEM version of MS-DOS (1.25 or higher).Version 1.14 (OEM) – possible basis for IBM's Personal Computer DOS 1.0.Compaq-DOS 1.12, a Compaq OEM version of MS-DOS (1.25 or higher).Version 1.11 (OEM) – possible basis for IBM's Personal Computer DOS 1.0.Version 1.10 (OEM) – possible basis for IBM's Personal Computer DOS 1.All of the versions here are believed to be based off of MS-DOS 1.25, even if the vendor called it something else.

Some vendors labeled their versions of MS-DOS with different names and version numbers. MS-DOS 1.25, the equivalent of PC-DOS 1.10, was the first version licensed to OEMs beyond IBM or Seattle Computer Products. No pipes, redirection, or device drivers were supported.

The command interpreter supported the following commands: DOS 1.0 worked with 160KB floppies and did not support folders (all files had to be in the root). 9.1 MS-DOS 4.0 (multitasking) and MS-DOS 4.1ĭOS 1.x was very limited in what it could do.Affected issues include Japanese (DOS/V), Korean, Arabic (ADOS 3.3/5.0), Hebrew (HDOS 3.3/5.0), Russian (RDOS 4.01/5.0) as well as some other Eastern European versions of DOS. While Western issues of MS-DOS evolved around the same set of tools and drivers just with localized message languages and differing sets of supported codepages and keyboard layouts, some language versions were considerably different from Western issues and were adapted to run on localized PC hardware with additional BIOS services not available in Western PCs, support multiple hardware codepages for displays and printers, support DBCS, alternative input methods and graphics output. Localized versions of MS-DOS existed for different markets. With PC DOS 5.00.1, the IBM-Microsoft agreement started to end, and IBM entered the retail DOS market with IBM DOS 5.00.1, 5.02, 6.00 and PC DOS 6.1, 6.3, 7, 2000 and 7.1. Microsoft DOS was released through the OEM channel, until Digital Research released DR DOS 5.0 as a retail upgrade. This is a list of MS-DOS versions released to the public.

Free copy of msdos 6.22