Subject: Re: Trying to get SCSI to work with IDE.
To: Keith Wiles <>
From: Drew Hess <dhess@CS.Stanford.EDU>
List: current-users
Date: 06/17/1994 13:18:59
I had a similar problem about a year ago when I bought a SCSI adapter and
a SCSI drive for the express purpose of running NetBSD.

Here is what I had to do to make things work:

	a.  make sure the boot feature of your SCSI adapter is enabled;
	    when mine is disabled by accident I get the C: H: S: error
	    as well
	b.  set up your system's BIOS to boot off the IDE drive
	c.  put at least a small root partition for NetBSD on your IDE drive
	    (mine is 10MB, which is enough to hold /bin and /sbin and a few
	    kernels); this has the added feature of being a nice backup in
	    case my SCSI root partition gets hosed.  I think in your case you
	    mentioned that you want to be able to run off the IDE drive
	    so you're probably doing this anyway.
	d.  if you run multiple operating systems, as I do, put OS-BS or
	    a similar multi-boot utility on the IDE drive, and point one of
	    the boot options to your NetBSD IDE partition

Now when your system boots, you'll bring up OS-BS or the NetBSD boot prompt,
depending on whether you did step d), and once you get to the NetBSD boot
prompt just use "hd(0,a)/netbsd" for the IDE drive or "hd(1,a)/netbsd" for
the SCSI drive.

The key for me was a) (enabling the boot ROM on the SCSI drive).  Since I
was physically bootstrapping off the IDE drive, I didn't think I would need
to have this enabled, but it turns out I did.  Once I enabled its boot
feature I was OK.