How widely was MS-DOS used? Was it globally, or just in some specific places?
Were there any regional substitutes used more commonly, and if so, what were they?
Retrocomputing Stack Exchange is a question and answer site for vintage-computer hobbyists interested in restoring, preserving, and using the classic computer and gaming systems of yesteryear. It only takes a minute to sign up.Sign up to join this community
As mentioned by Tommy, MS-DOS (or PC-DOS on IBM computers) was the default operating system for x86 PCs from 1981 to 1995 (and still widely used for a few years after that). Early versions were also adapted by OEMs to run on hardware which wasn’t quite IBM-compatible. As such, it was used pretty much everywhere PCs were used, whether it supported the local customs or not — many users around the world made do with an English-based computing environment, even if English wasn’t their native language.
MS-DOS itself ended up supporting a variety of localisations natively, but some markets had their own versions — examples include Arabic, Hebrew, Japanese (with the DOS/V effort), and Russian. The Japanese market in particular was quite different from the US-based DOS market, with a different “standard” for computers (PC-98) and specific software.