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From: Salvador Mirzo <smirzo@example.com>
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Subject: Re: z/PDOS-generic
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Grant Taylor <gtaylor@tnetconsulting.net> writes:

> On 7/18/24 10:07, Paul Edwards wrote:
>> For 35+ years I have wondered why there was no MSDOS for the mainframe.
>
> The answer is in the name.
>
> MS-DOS
>
> Microsoft DOS
>
> Micro
>
> micro-computers are the smallest end of the system with mainframes and
> supers at the other end of the system.
>
> IBM provided a Disk Operating System for early and / or smaller
> mainframes.

And why is /Disk/ Operating System?  What's so /disky/ about it?