Paul Newton wrote:
> Vince Teachout wrote:
>   
>> Actually, I did, but I had the misfortune to try it right around the
>> time that MS pulled their little sabotage stunt, 
>>     
> Vince
>
> Remind me - I don't recall anything along those lines. I do recall 
> thinking that DR6 was better than MS6, and that DR7 was really good.

I had forgotten the details.  Thank goodness for Wiki:

http://en.wikipedia.org/wiki/DR-DOS

------------------ From the above article -----------------------------


      Aggressive competition by Microsoft

Faced with substantial competition in the DOS arena, Microsoft 
<http://en.wikipedia.org/wiki/Microsoft> responded strongly. They 
announced the development of MS-DOS 5.0 in May 1990, to be released a 
few months later and include similar advanced features to those of 
DR-DOS. This has been seen as vaporware 
<http://en.wikipedia.org/wiki/Vaporware>, as MS-DOS 5.0 was released 
June 1991. It included matches of the DR's enhancements in memory 
management, but did not offer all of the improvements to the syntax of 
DOS commands that DR did.

....... <A few paragraphs cut>

Though DR-DOS was apparently 100% binary compatible with applications 
written for MS-DOS, Microsoft nevertheless expended considerable effort 
in attempts to break compatibility. In one example, they inserted code 
into Windows 3.1 to return a non-fatal error message if it detected a 
non-Microsoft DOS. With the detection code disabled (or if the user 
canceled the error message), Windows ran perfectly under DR-DOS and its 
successor Novell DOS.




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