On Sun, 3 Feb
2002, Jerome Fine wrote:
 (c) If you are trying to produce an exact "block for block" copy of DY0:
 into DY1:, then use:
 COPY/DEVICE  DY0:  DY1:
 and the file structure is ignored.  A block for block copy is made.  If you
 have any BAD blocks on DY0: or DY1:, it probably will not work. 
 This has the same
affect as init.  It asks if you're sure, and no matter
 what you say (y, yes), it exits without doing anything.  I have to be
 missing something really obvious.  I also have a 5.0 RT-11SJ disk which
 does the same thing. 
 
Although at first glance I would have said that you have a bad DUP.SAV(same program for
both commands), I can't see that happen with both
V4.00 DUP.SAV and V5.00 DUP.SAV, especially on switching from
V4.00 RT11XM to V5.00 RT11SJ.
Maybe try the /NOQUERY switch:
COPY/DEV/NOQU  DY0:  DY1:
also
INIT/NOQU  DY1:
That way it does not ask for a response.  Worth a try.