[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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