Hi, Just an update on this. I still haven't got those 8' floppies of unknown origin to play with but I HAVE made a lot of progress with my own disks. Thanks to everyone who gave me help with this.
Here's a writeup for those interested: http://www.classic-computers.org.nz/blog/2017-04-15-adventures-with-an-8-inch-disk-drive-part1.htm Terry (Tez)
