Date   : Wed, 31 Mar 2004 13:01:09 +0200
From   : "Mark Usher" <mu.list@...>
Subject: Re: Watford > Acorn DFS

> program to produce
> Replicas, but on swapping my Masters 3 1/2 " disk for the PC one as an
> experiment, the disk simply spun with no result. I understand 
> this may be a
> physical problem with the drive design as much as the controller?

Look at the Disk Drive & DFS Guide
http://bbc.nvg.org/doc/DiskDriveAndDFSGuide.zip

This will explain some of the differences and drive setups. But in
short, for a PC drive, you must change the jumper from ID1 to ID0, or
use it as a second drive.

-Mark