RT-11 installation

[David Betz]

I'm finally getting around to trying to do something with my PDP-11/23 
system and am having trouble creating bootable RT-11 V5 disks. I have 
an RX02 drive and a set of RX01 distribution disks. I've tried booting 
disk 1 of the RX01 distribution and that fails. Should I be able to 
boot an RX01 on an RX02 drive? Also, I've tried copying disks using:

COPY/WAIT/OUTPUT:DY1: DY0:

and then

COPY/BOOT DY1:RT11FB.SYS DY1:

Unfortunately, that doesn't result in a bootable disk. In fact, when I 
did it, it trashed the system disk in DY0 even though I removed it 
before and replaced it with the source disk of the copy. Does this 
sound like I've got a broken drive? I seem to be able to read either 
RX01 disks or RX02 disks in DY1 without any problem. Also, the copy I 
made in the first step above seems to be okay. It's just that I can't 
boot the disk after the second COPY/BOOT step.

What dumb thing am I doing wrong?

Thanks,
David Betz