[Coco] Boot OS-9 from drive other than 0

[Bob Devries]

Robert Gault said:
> The boot module in the kernel must work with a .vhd image not a floppy.

I thought this would be the case, but where do I get that boot module?

> OS9Boot file which must contain hdrive and appropriate descriptors for the 
> .vhd image.

I'm using EMUDSK with its descriptors. Are they suitable?

> You must run LINK.BAS and indicate that the boot drive will be 255.

Where do I get LINK.BAS? It's not on any of the virtual disks in the NitrOS9 
image available on the VCC site.

> The RGB-DOS command for booting would just be DOS255.

Ah, that's useful.

--
Regards, Bob Devries, Dalby, Queensland, Australia

Isaiah 50:4 The sovereign Lord has given me
the capacity to be his spokesman,
so that I know how to help the weary.

website: http://www.home.gil.com.au/~bdevasl
my blog: http://bdevries.invigorated.org/

----- Original Message ----- 
From: "Robert Gault" <robert.gault at worldnet.att.net>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Saturday, March 29, 2008 5:21 PM
Subject: Re: [Coco] Boot OS-9 from drive other than 0


> Bob Devries wrote:
>> Could someone please tell me what modifications need to be made to allow 
>> OS-9 to boot from a drive other than drive 0?
>>
>> I'd like to boot from one of the virtual disks using the VCC Emulator and 
>> its built-in RGB DOS. I'd like to be able to type: DRIVE 255: DOS and 
>> have OS-9 start that way. At the moment it reverts back to dtrive 0 as 
>> soon as its read track 34 off the drive.
>>
>> Ideally, I'd love to have a situation where it would boot directly from 
>> the hard disk, with no (virtual) floppy disk at all. SIGH.
>>
>> -- 
>> Regards, Bob Devries, Dalby, Queensland, Australia
>
> Make sure that the .vhd image has OS-9 installed on it. Then create a boot 
> disk and install it on Drive255 as follows.
>
> The boot module in the kernel must work with a .vhd image not a floppy. 
> There must be a single sided .os9 image of 34 tracks copied to drive 255 
> on the .vhd image. Drive 255 will then contain the kernel and the OS9Boot 
> file which must contain hdrive and appropriate descriptors for the .vhd 
> image. You must run LINK.BAS and indicate that the boot drive will be 255.
>
> LINK will modify LSNO of the OS-9 portion of the .vhd image indicating 
> that the boot file is on DRIVE255. In other words, an offset larger than 
> the OS-9 .vhd image will be put DD.BT.
>
> The RGB-DOS command for booting would just be DOS255. You don't need to 
> use the DRIVE# command.
>
> ============
> Given your description, I'd say you are using the standard floppy BOOT 
> module rather than one for the hard drive.
>
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