I can never remember which is which between Windows
2000
and Windows ME ("Millenium Edition")
IIRC (It's been a long time) - 3.1, 95, 98 and ME were all on top of DOS
NT, 2000, XP, Vista, 7, 10+ were all NT
FWIW - At one time IBM actually gave-away PC-DOS - as part of a free "IBM ServerGuide
Scriptine toolkit"
A little project I did a while back, DBBD - "DosBox Boot Dos"
made up a little set of files and a command to easily boot various actual DOS
distributions under DosBox (I still sometime need to do/check something in actual
DOS) - I included every DOS I could find freely available, including the above mentioned
PC-DOS, FreeDos, Caldera OpenDos and PTS DOS - but I've never seen any version of
MS-DOS available like that!
Dave :::
https://dunfield.themindfactory.com ::: "Daves Old
Computers"->Personal