[Coco] Create Nitros9 DSK on SDC

[Bill Nobel]

As for Ed’s question. I have just uploaded my SDC2 utility to Discord and FB groups that resolve the creating of images in Nitros9. It is a much expanded version of Barry Nelson’s Original SDC utility

Bill

Sent from my iPad

> On Aug 24, 2020, at 11:00 PM, Bill Nobel <b_nobel at hotmail.com> wrote:
> 
> Hi Jeff, I found SDC-DOS doesn’t extend images automatically. The SDC direct commands to create  DSK defaults the disk to 35 try single sided. SDF you can specify the number of cylinders.
> 
> Nitros9 will not support SDF images, but it does auto expand images with the Format command in conjunction with Dmode.  I’ve experimented with SDF in Nitros9 and all I get is error 242 or 244.  It seems the Nitros9 drivers are seeing the inner SDF sector padding (crc’s and such)
> 
> Bill
> 
> Sent from my iPad
> 
>> On Aug 20, 2020, at 11:31 PM, Jeff Teunissen <deek at d2dc.net> wrote:
>> 
>> The CoCo SDC does not extend a disk like an emulator can, so disk
>> image files have to be full-sized. To the best of my knowledge, you
>> can't make an image larger than 40-track, double-sided using SDC-DOS
>> (and I don't recall there being a way to make a new image from
>> (Nitr)OS-9).
>> 
>> .DSK images are always the same size when created by SDC-DOS, 157.5K;
>> they're only ever 35 tracks.
>> 
>> The way to create a DSDD image is using DRIVEx,"DISKNAME.SDF",NEW++
>> (that gets you 40 tracks, double sided).
>> 
>> Once the disk image is created, you can boot NitrOS9 and format the
>> new disk (just as you still need to DSKINI a disk image you created in
>> SDC-DOS) just like formatting any other floppy.
>> 
>> If you're talking about the giant super-floppies we use as hard
>> drives, the simple answer is, "you can't". You can make an image with
>> Toolshed, using the command:
>> 
>>   os9 format DSK_NAME.VHD -n"My Disk" -e -t29126
>> 
>> the -t29126 tells it to make the disk (which is otherwise exactly like
>> a single-sided floppy) have 29126 tracks on it, which makes it almost
>> the largest possible disk which still uses only 1 sector per cluster
>> -- the disk is 127.95 megs.
>> 
>> The -e makes the disk image full-sized, which lets the CoCoSDC not choke on it.
>> 
>> Then just copy the image to your SD card.
>> 
>>> On Mon, Aug 17, 2020 at 5:12 PM Ed Orbea <ed.orbea at gmail.com> wrote:
>>> 
>>> I know how to create blank disks on an SDC (DRIVE 0,"DSK_NAME.DSK",NEW
>>> and  DRIVE 0,"DSK_NAME.SDF",NEW+) that cna be used to RS-DOS.
>>> 
>>> However, how can I create a blank Nitros9 dsk?
>>> 
>>> Thanks
>>> 
>>> 
>>> 
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