9 Jun
2015
9 Jun
'15
8:15 a.m.
On Jun 8, 2015, at 08:58, Peter Coghlan <cctalk at
beyondthepale.ie> wrote:
Standalone backup is a very small VMS environment. You get a "$" prompt and
the only command which it accepts is "BACKUP". You don't get to mount
anything
as BACKUP will perform any mounting needed itself. I'm not sure but it is
also possible that only BACKUP /IMAGE works.
Thanks!
My goal here is to figure out what's on the R80 and that RL02 pack, boot them if
possible, and extract all of the delicious bytes for archival and examination on my modern
machine(s) (primarily Mac). I'm trying to boot the standalone backup tape images
because those are what I found that have the same version number as the label on top of
the RL02 pack, and are in a format that I can do something with at the moment.
Now, the seller of the system stated that he last run OpenVMS 7.3 (if I recall correctly)
on it, so it's possible that's what is on the R80.
The issue that I'm having at the moment is that when I try to boot from either that
RL02 pack or the R80, VMB.EXE reports "%BOOT-F-Unable to locate BOOT file". I
don't know yet whether there's something not-right about the contents of the hard
drives, or I need to configure something (?) so VMB.EXE knows what to look for. The boot
scripts on the console boot tape appear to set up VMB.EXE by shoving numbers into some
registers prior to loading it, and I have not yet located any documentation about what the
numbers mean. I can just see that they're different in each of the scripts. I've
only tried the non-conversational boot scripts so far, since I learned about what the
xxnGEN scripts were for after my last experimentation session.
I wonder if I might be able to back up the hard drives to an absurd number of emulated
TU58 images, so that I could then examine those on my modern machine?
I could probably back up onto magtape, but I don't have another means to read the
tapes yet. I have another tape drive (which needs repair) that I'll eventually include
in my PDP-11/44 restoration, but that's a big project, far in the future.
I wonder if the VMS5.3 standalone backup might know how to back up to some network device?
I have an ethernet card in the VAX, so that might be a way to get data off the machine for
examination.
Any suggestions or clues would be greatly appreciated! I'm still learning how to tell
the chickens from the eggs.
--
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/