[Coco] Some Coco Questions

[Robert Gault]

Derek wrote:

> I have a couple of questions

> 2nd Question: I have a 3.5" and a 5.25" drive hooked up to my real Coco III.
 > The 3.5" drive is set as drive 0 and the 5.25" is set as drive 1. What
 > I am having trouble with is using the DOS command on drive 1 to boot
 > OS-9 disks.
 > I used the "Drive1" command to make the 5.25" drive my default, then
 > type DOS and it reads the 5.25" drive for a moment, then switches to
> reading the  3.5" Drive 0 and then goes back to the OK prompt.
 > Is there a way to boot OS-9 disks off a drive designated as Drive1?
> 
> Thanks all!
> 

Yes, that can be done but it requires new Boot, Init, and CC3Go or SysGo 
modules in the kernel and OS9Boot file. It is easy to modify Init or 
CC3Go to boot from /D1. Boot is hard coded for /D0 but the source for 
NitrOS-9 has a provision for selecting the boot drive. In short, you 
will need to do some assembly programming.

The main question I have is why boot from /D1. Just boot your boot disk 
on a 3.5" disk and boot from /D0. Much much less work.