From July 1981, SCP continued to sell the operating system it had created, now calling it Seattle DOS and bundling it with its hardware products. It continued to do so until 1985, by which time its was clear buyers wanted systems, and cheap ones - whether from IBM or the many 'cloners' who'd released products compatible with its technology.
Brock now sought to sell his rights to MS-DOS, a scheme with which Microsoft was not best pleased and said its agreement with SCP did not permit. Brock sued, and the case went to trial in the last few months of 1986. Brock and Microsoft quickly came to an out-of-court arrangement, however: Brock sold his licence to Microsoft for $925,000, leaving the software giant in complete ownership of the OS.
Through this time, Microsoft was releasing version after version of MS-DOS, each mirrored by a release of IBM's IBM-DOS and, later, PC-DOS, as its take on the OS came to be called.
Other versions appeared, tweaked by PC manufacturers using Microsoft's OEM kit to more closely fit the specifics of their hardware. Many would run software developed for the IBM PC, others would not, though they would run generic MS-DOS-compatible applications.
CP/M-86 was eventually released, in 1981, and subsequently offered by DR as a third-party alternative to MS-DOS. As you can see from the ad above, Microsoft saw it as as a threat. DR's OS was bundled with a number of IBM PC rivals, from the likes of Apricot and Siemens.
You can view the source code for CP/M-86 - and other versions of the OS - here.
In May 1988, CP/M-86 was effectively re-released as DR-DOS and pitched more directly as an alternative to MS-DOS itself than to IBM's PC-DOS.
DR-DOS found many supporters but failed to dent Microsoft's market share. Microsoft quickly established the technique of announcing new MS-DOS features well ahead of their appearance, previously seen as an approach that could only kill sales of the current version. Instead, it kept buyers away from rival offerings, and it's now a common tactic employed by highly competitive tech companies.
MS-DOS gets upgraded, kind of
Meantime, MS-DOS continued to evolve, gaining a graphical user interface of sorts with version 4.0, disk compression tech with version 6.0, and FAT32 support with version 7.1.
Version 4.0 should have been the final release - even Microsoft said so, announcing in 1987 that "DOS is dead" and that we should all be using OS/2, jointly developed by IBM and Microsoft, though the latter stepped away from it when Windows 3.0 became a huge success. That's another story.
Microsoft's work on DOS eventually took the OS to version 8.0, the release used for Windows XP boot discs. With that release, on 14 September 2000, MS-DOS development formally came to an end, though significant work stopped some years earlier with MS-DOS 5.0 when it ceased to be offered as a standalone product. ®
Microsoft's MS-DOS is 30 today
The last stand-alone version of MS-DOS was 6.22, not 5.0. I know this because I upgraded my 5.0 system to 6.22.
This is not a title
Yep, that just about sums it up.
Windows CE-ME-NT http://www.the-jokes.com/funny-picture-cartoon-138.html
Microsoft breaks Volkswagen's record: Volkswagen only made 22 million bugs!
Keyboard not detected, press f1 to continue.
Ther box said "needs Windows 98 or better to run", so I installed Linux.
That really brings back memories
For the longest time as a child, I used to view computers as little more than glorified games machines. Oh, I'd sometimes type cheat programs in BASIC on my Amstrad but that's about as far as it got.
When my dad got his first PC, the pattern continued, with myself just playing a couple of games on it. Then one day I happened upon a tutorial for this weird thing called MS-DOS. It was confusing and terrifying but by the same token, oddly intruiging as well. I began poking around in different directories, learning how to move, copy and delete files using the command prompt. I even progressed to the arcane mysteries of creating custom config.sys and autoexec.bat files.
I was never blown away by Windows 3.x and only really started using it with the release of Windows 95. But I'll always be grateful to MS-DOS and that tutorial for showing me that there's more to computers than gaming.
"When you buy a pc from pc world it comes with Norton or whatever installed . its ready."
Yeh - ready to be uninstalled.
DOS hackers can still play...
thanks to the FreeDOS project.