In the annals of PC history, IBM’s OS/2 represents a road not taken. Developed in the waning days of IBM’s partnership with Microsoft—the same partnership that had given us a decade or so of MS-DOS ...

DR DOS version 9.0 is now in beta testing, with Revision 291 recently released and available for anyone to download and test. Developer and Redditor CheeseWeezel announced the publicly available ...

DR-DOS is back, and there is already a test version you can download. But as of yet, it's not finished, not FOSS – and not based on the original code.… The long-dormant DR-DOS.com website is alive ...

A forensic computing researcher may have settled one of tech's longest standing controversies: whether the original version of Microsoft's seminal MS-DOS operating system contained code copied from an ...

In context: Back in 1980, Tim Paterson was creating a new operating system he called QDOS or Quick and Dirty Operating System. The system was later renamed 86-DOS, as it was being designed to run on ...

Like the old-fangled BIOS (which is slowly being phased out with the help of EFI), the DOS operating system is a piece of computing history that refuses to be only history. While most folks will never ...

July 20, 1978: Apple DOS makes its debut on the Apple II, giving Apple its first official operating system. A command line interface with green text prompts on a black background, Apple DOS looks ...

Update, July 5, 2021: It's the July 4 holiday weekend in the US, which means Ars staff gets a well-deserved holiday to catch up on this summer's Steam sale (or maybe just to rest). As such, we're ...

The year was 1983. Microsoft was slowly becoming a well-known tech company in the PC space. Two years before, in 1981, Its MS-DOS operating system would be installed in the first IBM PC. It launched ...