Re: Unidos Questions

[Jeff Blakeney <CUTjblakeney@sympatico.ca>]

On Fri, 04 Nov 2005 06:19:31 GMT, Lyrical Nanoha
<LyricalNanoha@dosius.net> wrote:

>On Thu, 3 Nov 2005, Ed Eastman wrote:
>
>> I was thinking about transferring my old 5.25 DOS3.3 stuff to 3.5" disk using 
>> Unidos.  It looks like there is only FID on the disk, and it seems like some 
>> of the commands may be modified.
>
>Only patch to the FID I have was to disable drive range checking to allow 
>use of drives 3 and 4.
[snip]
>> 4. Anyone out there tried Unidos and found it useful?  I'd love to hear your 
>> experiences.
>
>I certainly find it useful, even if the Dapple Megadisk is half-wasted, 
>because 800K per disk is still more than 140K.

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".  :-)

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.

I always wanted a DOS 3.3 variant that realized I only had one 3.5"
floppy and would let me access the two 400 KB volumes on that drive as
slot 5, drive 1 and 2 so that I could use programs that were designed
to work with two drives on that single 3.5" disk.  There are a lot of
programs that won't let you enter drive 3 or 4 because they think
those values are out of range.

-- 
 Jeff Blakeney - Dean of the Apple II University in the
                 Apple II Community on Syndicomm.com
 CUT the obvious from my address if you want to e-mail me