[Coco] NitrOS-9 Cobbler Problems

[Joel Ewy]

Bob Devries wrote:
> If cobbler has done its job right, then you shoul see $4F53 at the 
> beginning of sector $4C8 on a 720K disk.
>
> If it's not there, then cobbler failed somehow.
>
> Be sure that your descriptors are properly set before you use cobbler.
>
> I'm assuming you're using a virtual disk with HDB-DOS? Do you have the 
> DRIVE ON/OFF command set to make drive 0 the virtual drive instead of 
> the real one?
>

Thanks for the response, Bob. 

I'm using only virtual disks at this point, though I have been able to 
access the real floppy drives using the /d0 and /d1 device descriptors.  
I wouldn't think that HDB-DOS' DRIVE ON/OFF command would have any play 
in OS-9.  But in any case, I'm booting OS-9 immediately on power-up, so 
I don't think that's relevant.

I'm not quite sure how to check the contents of sector $4C8.  Would that 
be the proper LSN if I use 'ded' on the whole disk?

JCE

> I'm sure there's other issues, but that's all I can think of right now.
>
> -- 
> Besides a mathematical inclination, an exceptionally good mastery of 
> one's native tongue is the most vital asset of a competent programmer.
>
> Edsger W.Dijkstra, 18 June 1975
>
> ----- Original Message ----- From: "Joel Ewy" <jcewy at swbell.net>
> To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
> Sent: Monday, January 04, 2010 3:08 PM
> Subject: [Coco] NitrOS-9 Cobbler Problems
>
>
>> Hey everybody,
>>
>> I've been working on a demonstration of using 8-bit composite (NTSC) 
>> artifact colors that I'd like to distribute as a 720K NitrOS-9 disk 
>> image file, bootable over Drivewire 3.  (I may also make a version 
>> that will boot from a regular 720K floppy.)  The slideshow is all 
>> ready to go, but I'm having problems making a bootable disk image.
>>
>> I started with a NitrOS-9 image file that, IIRC, was distributed with 
>> Drivewire.  It is 'nos6809l2.dsk'.  I made some other disk image 
>> files using the Toolshed tools (os9 format -ds -t80 diskname.dsk) and 
>> copied my converted image files onto them, then loaded them up into 
>> the Drivewire server.  No problem.
>>
>> Then I made another blank image the same way, and immediately used 
>> cobbler to put an OS9Boot file on the disk.  Doesn't cobbler add the 
>> proper code to the boot track?  I copied a shell, merged with a few 
>> utilities, grfdrv, and sysgo.  I tested it by hitting reset, and 
>> (after I got all the appropriate files copied) it seemed to boot and 
>> run the slideshow.
>>
>> However it doesn't boot cold.  After typing 'DOS' HDB-DOS simply 
>> returns to the 'OK' prompt.  So it seems as if the boot track is not 
>> being laid down.  I tried 'os9gen -q=os9boot' and I tried deleting 
>> the OS9Boot file and re-running cobbler, but neither of these things 
>> made any difference. What am I forgetting?
>>
>> I'm almost done with this demo... So close...  Need to get some other 
>> work done... :-)
>>
>> JCE
>>
>>
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