[Coco] Trouble booting NitrOS9 under MESS 148

[Bill Pierce]

Philip
You say the boot always fails from the menu or DOS 254?

First, Have you run LINK? On drive 253, there is a file called LINK/BAS. You must run this file to make OS9 run from the menu. "RUN LINK:253"

2nd. How did you get an 80 or 40 trk boot disk to a 35trk drive on the VHD? You MUST make a 35trk boot disk as there are none in the repo. Backup this disk to 254

3rd. Are  you trying to boot Niros9 with DW/Becker port? then none of the above will work UNLESS there is a copy of the boot in drive 0 of the DW console and this requires the DW boot disk with Becker port support in both positions.

If you want a DW/Becker boot from Vcc to boot from the VHD, then you must make a custom boot VHD from the repo Becker boot. If you want this to boot from Mr Gaults menu in RGBDOS, then it becomes even more complicated but can be done.

I plan to upload some VHD templets of DW/Becker boots for people to use with VCC but I doubt it will be done before Fest time as I'm tied up with fixing software problems for the Coco Coding Contest till then.


Bill Pierce
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-----Original Message-----
From: Robert Gault <robert.gault at att.net>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Sent: Fri, Apr 19, 2013 8:51 pm
Subject: Re: [Coco] Trouble booting NitrOS9 under MESS 148


Philip Zeigler wrote:
><snip>
> I've created a coco3.vhd zero-byte file using the touch command.  I've run the 
CREATE.BAS file from the tools.dsk and it does properly create the vhd file with 
tools on 253 and the boot disk on 254.
>
> The problem I am having is that the boot always fails from the menu or 
executing DOS 254.
>
 ><snip>

Booting OS-9 from a directory on the hard drive will only work if OS-9 is 
already installed on the hard drive in the first half of the drive.

I think the instructions included with my RGBDOS package explain how one would 
install OS-9/NitrOS-9 on a .vhd disk. You will certainly need to boot 
OS-9/NitrOS-9 from a floppy, create a new boot disk that includes the .vhd 
driver package, boot from that new floppy, and then format the .vhd drive for 
OS-9.

You should not use more that $5A000 sectors for OS-9 on the .vhd image or you 
will overlap the Disk Basic partition.

This creation can be difficult if you are new to OS-9. A formatted .vhd image 
can be found on the VCC site which has an older version of NitrOS-9 installed. 
I'm not sure which directory Joseph put the boot disk on, 255 or 254.

Have you been able to boot from the floppy? If not there is a problem with the 
nightly build.

Robert




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