yesterday, i asked about informations for my list of dos-versions. The lists shown in internet arn't complete. Here is my actual list until 1993: December 1980 QDOS July 1981 86-DOS Q3 1981 CP/M 86 Mid 1981 PC-DOS 1.0 August 1982 PC-DOS 1.1 September 1982 MS-DOS 1.25 March 1983 MS-DOS 2.0 March 1983 PC-DOS 2.0 March 1983 MS-DOS GUI November 1983 MS-DOS 2.01 November 1983 PC-DOS 2.1 December 1983 MS-DOS 2.11 Early 1984 MS-DOS 2.25 September 1984 MS-DOS 3.0 September 1994 PC-DOS 3.0 November 1984 MS-DOS 3.1 December 1985 PC-DOS 3.2 April 1986 MS-DOS 3.2 April 1987 MS-DOS 3.21 April 1987 MS-DOS 3.3 April 1987 PC-DOS 3.3 February 1988 MS-DOS 3.3Plus March 1988 MS-DOS 3.3T April 1988 MS-DOS 3.31 July 1988 MS-DOS 4.0 July 1988 PC-DOS 4.0 November 1988 MS-DOS 4.01 November 1988 PC-DOS 4.01 April 1989 MS-DOS 4.01a April 1991 MS-DOS 5.0 June 1991 PC-DOS 5.0 June 1991 MS-DOS 5UG Q4 1991 MS-DOS 5.Oa Q4 1991 MS-DOS 5aUG February 1992 PC-DOS 5.0.1 September 1992 PC-DOS 5.0.2 March 1993 MS-DOS 6.0 March 1993 MS-DOS6UG March 1993 60 Supplimental June 1993 PC-DOS 6.1 November 1993 MS-DOS 6.2 November 1993 MS-DOS62UG November 1993 MS-DOS62SU November 1993 62 Supplimental December 1993 MSClient 3.0 December 1993 PC-DOS 6.3 Are there any other versions of MS-DOS or PC-DOS known? And i wish to complete the list by ALL OEMs! This means: which versions where sold by COMPAQ, which by SIEMENS, which by ZENITH DATA SYSTEMS , .................... (there are differences between the versions!) Thanks for all help.

Take a look at your other post, but from the look of your date layouts you have already been to powerload. No need to post twice you know! This would have been as well posted under your first post, without wasting space.

Aways thought Compaq produced Dos 3.31.

I'll elaberate on my last statement. Compaq produced a variant of MS Dos 3.3 called 3.31. It overcame the 32meg hdd access barrier earlier versions had MSs first version to do this was MS Dos 4.0 then imediately replaced with 4.01 because 4 was causing a lot of problems in hdd management and other areas of compatibility with previous version(still occuring today:). Many people stuck with ver 3.3 or used DRdos untill ver 5 arrived. Phew!! this is stretching the memory a bit lol.

Also MS client isn't Dos, it's MSs Dos network client. The supplimental s are not versions of Dos just files MS left out of the original or that MS deamed were not needed in the distribution such as their dos Gui-Dos Shell. Which incidently was first released with ver 4. Never relised MS produced a dos gui in '83 or was that there first attempt at windows?-I bet it was, could be wrong of course. Impressive list though.

Don't forget about DOS 7.0 and 7.1. DOS 7.0 shipped with Windows 95.

Impressive list indeed for a ripoff of powerloads MS-DOS timeline! MS-DOS GUI in March 1983 was indeed the first Windows BETA (Not called Windows till November 1983) Supplimental files were DOS files from earler versions that MS no longer deemed needed (till users started to ask for them)nor are step-up or upgrades DOS versions. and MS-DOS 3.31 was produced for more than one OEM, Compaq and KayPro being only two of them. Have a look at powerloads list at - http://www.powerload.fsnet.co.uk/timeline.htm and tell me roman's is not a copy?