[Coco] SDC Question

[William Carlin]

There are two pieces of NitrOS-9 software that allow you to list the
contents and extract the files from both RSDOS and OS9 dsk images.  They
are called 'rsdisk' and 'os9dsk' respectively.

The last two links describe the program:

https://www.google.com/#q=site:colorcomputerarchive.com+os9dsk&spf=1

I'm still looking for the program and source.  I think I got it from a hard
drive archive that has a lot of OS9 software and source code on it.  The
folders were broken down alphabetically by the program name with subfolders
for each program that began with that letter.  I will look soon to find it
and post where you can download the image.



William Carlin

On Fri, Apr 28, 2017 at 4:09 PM, Robert Gault <robert.gault at att.net> wrote:

> L. Curtis Boyle wrote:
>
>> Sorry for the late reply (been busy with the Fest, work, and a ton of
>> driving).
>> Basically, I have a 128 MB NitrOS-9 virtual hard drive image that I use
>> on a real Coco 3, using the CocoSDC. I would like to, from within NitrOS-9
>> itself, access the floppy DSK images as well, but I don’t see anything in
>> the docs about how to mount/change floppy DSK images while still remaining
>> on the hard drive boot. I also wouldn’t mind technical docs on how to do
>> things on the SDC card, so I can make utilities in NitrOS-9 to mount,
>> create, etc. DSK images, directories, etc. (If all of that is possible).
>> Also, I don’t know if it will mount a PC style disk image (512 byte
>> sectors) and allow either the PCDOS utility or the MSF file manager/SDisk 3
>> disk driver combo to directly access the PC files on such a virtual disk. I
>> can do all of this on real floppies under NitrOS-9 (and what I have been
>> doing so far is copying to/from real floppies as an interim step to move
>> files between the CocoSDC floppy images and the NtirOS-9 hard drive DSK
>> image), but would love to this all with
>>
> out leaving NitrOS-9 at all.
>
>>
>>
>> L. Curtis Boyle
>> curtisboyle at sasktel.net
>>
>>
> I don't have a CocoSDC yet but given your system, I'd suggest the
> following.
>
> Create a larger .vhd image if necessary which is partitioned for both
> NitrOS-9 and Disk Basic (actually floppies.) You would not need to
> mount/re-mount disk images on the CocoSDC but would just need to access the
> virtual floppies on the .vhd. The floppies can be either a Basic disk or an
> OS-9 disk.
> Once you have generated the required floppies, you could transfer copies
> to your PC (if necessary to generate a real floppy) or I imagine do it
> directly with the CocoSDC system if you have a floppy controller on your
> Coco3.
>
> The only issue might be if the CocoSDC uses 512 byte sectors, as by
> convention, existing .vhd images use 256 byte sectors.
>
>
> Robert
>
>
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