4 Apr
2012
4 Apr
'12
10:34 a.m.
From: Dave McGuire <mcguire at neurotica.com>
Well, I just timed it: Clean slate to running VMS system with a tape
image mounted on an emulated drive, under simh. 26 minutes.
That's because you know what you are doing.
But suit yourself. ;)
Nice!! How old are they? (if you don't mind my asking, I am just
curious)
Range from 12 to 22.
I
don't know your level of expertise with VMS or simh, so please don't
take this the wrong way, but...if you want to do that and would like
some help, I'd be happy to help you out. I can put together a "canned"
simh VMS installation for something like this in a very short time.
I got simh to teach my kids some machine language programming on the
PDP-11.
(We had a class last Sunday.)
Sweet!!
Yeah, back in 1986 or so, this was a totally awesome system! Fooling
around with
these tape images on disk shows me (again) how far computers have come.
I can scan
a 30 MB file in a fraction of a second! I'm sure that would have taken
10 minutes or
so on the KA-630.
Jon Elson wrote :
I've finally established contact with the last guy who worked on the
vmsbackup program,
he suggested removing the offending tape headers with xxd, but if you
cut the top lines
off the file, it uses the address column on the left and you end up with
zeros in their
place. Anybody know a way to edit a tape container file to remove a few
tape blocks
If all else fails, I suppose I could go that way,
but this vmsbackup
program
seems to try to work, it probably needs a little tweak. It detects the
80 byte
header records and stops. All the VMS Backup tapes I've checked so far
have two 80 byte headers, this program seems to want one 256-byte header.
That doesn't sound too tough to deal with. Good luck!
from the beginning?
I know I could write a program that does this exactly, and my just do so
tonight.
Basically, it would extract the backup files verbatim from the tape image.
Jon