Re: Unidos Questions

[Andy McFadden <fadden@fadden.com>]

Jeff Blakeney <CUTjblakeney@sympatico.ca> wrote:
> DOS 3.3 can access volumes up to 400 KB in size.  That is why the DOS
> 3.3 variants for 3.5" floppies usually give you four drive numbers per
> slot instead of two.  I'm guessing you knew that and the "140K" above
> was just a "typo".  :-)

There's also DOS Master, which lets you have five 140K or 160K volumes on one
800K disk.  For five 160K volumes, you can choose to take a bite out of
the first one to leave room for booting ProDOS (5 * 160 = 800).

I've used this approach with CiderPress' copy & paste to put lots of DOS
stuff onto 800K images that I can use with KEGS or a IIgs.  With the 140K
volumes it's also possible to copy the entire image on and off to 140K
disk images.

> I can't remember which way UniDOS does it but one 3.5" DOS 3.3 I used
> you could access the entire 800 KB as two drives.  One at slot 5,
> drive 1 and the other at slot 5 drive 3.  If you had two 3.5"
> floppies, the second 3.5" drive was accessed as slot 5, drive 2 and
> slot 5, drive 4.

DOS Master uses volume numbers.

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