[Coco] Nitros9 on a CC3 512k

[George Ramsower]

Bob.
 I use 720K 3.5' floppies exclusevley.
 I boot from a 720K 3.5 for both my cocos.
 This doesn't make sense. I seem to recall actually booting a nitros9 image 
on a floppy on this same computer. I do have bootable images of some games 
on floppies. They work fine

uh... well, maybe I should check this again.


'Film at eleven"

George

From: Bob Devries
Hi George,

your symptoms seem to me to be consistent with the drive not being able to
read the second side of the disk.

I'm not familiar with the "cocodisk" programme. Is it able to write an OS9
image to a real disk?

Regards, Bob Devries

--
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: "George Ramsower" <georgeramsower at gmail.com>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Monday, March 01, 2010 10:29 AM
Subject: Re: [Coco] Nitros9 on a CC3 512k


> >On Sunday 28 February 2010, George Ramsower wrote:
>>> Finally I get around to play with Nitros9, build a boot disk on my XP 
>>> box
>>>using Cocodisk from nos96809l2v030208coco3_80d.dsk and it has a problem.
>>> First, I used cocodisk to format the 720K 3.5" disk with 80 track, two
>>>sided. Then did the "Write to disk" to do this.
>>> The coco does boot and gets as far as the startup file and hangs.
>>> Rebooting with a working OS9 disk and looking at the Nitros9 disk 
>>> reveals
>>>that the root directory appears to be intact but I cannot list the 
>>>startup
>>>file or peer into the cmds directory. Error 247.
>>> I tried formatting a floppy on the coco and trying again but, with the
>>> same result.
>>>
>>> I would offer more info but don't what to tell you. Ask me questions and
>>> I will begin the discovery process as to why I'm getting this problem.
>>>
>>> Thanks,
>>>
>>>George
>>
> On Sunday 28 February 2010, Gene Heskett wrote:
>
>>I have found that the default build does not properly identify the disk
>>images format, and have had to edit it with a hex editor, changing the
>> bytes at offset $10, and again at $41 I believe, to (if using the 80 
>> track
>> image, $07 at 10, and $03@$42).
>>
>
> Beginning at $40, I see "OS9BOOT"
>
> I think this might be the wrong place to look with DED. Or I'm looking at 
> the wrong thing.
> George
>
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