A couple of folks have clued me in to my mistake: I should have been trying to boot DQ0/1
instead of DU0/1. Now I'm getting disk activity followed by "%BOOT-F-Unable to
locate BOOT file", which is better! I found 725/730 diagnostics on another tape
image, so I'll try running those next.
Yay!
--
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/