Ok, to summarize responses to everyone's excellent suggestions so far:

I am confident that my altpath is configured correctly.  I have booted from
this drive with SLT's cut on other systems before, just never successfully
booted from an SLT cut on this system.

The SLT is being cut/checked/booted all on the same drive, a DDS-3 (it
shouldn't matter that I'm using a 60m tape in a DDS-3 drive, right?)

Part of my problem was that I was trying to do this remotely, by using
Stan's ONLINE program to mount the SLT before =SHUTDOWN.  But apparently
CM>RS takes the tape offline again, or at least causes the SPU to forget
that it is online.  So I came in and physically re-mounted the tape while
sitting at the boot menu, and now the results are slightly different.  The
tape drive blinks a bit, then I see this:

Main Menu: Enter command or menu > bo alt
Interact with IPL (Y, N, or Cancel)?> y

Booting...
Boot IO Dependent Code (IODC) revision 4


HARD Booted.


...and then it just stops there.  The front panel LCD says "INIT CBF8
REMOTE TRAPS CPU01".

So, anybody have any further clues for me?  Thanks again.


_______________________________________________________________
Jon Diercks * Systems Manager * Information Technology Services
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