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From: DCOTTLER%rca.com@CSNET-RELAY.ARPA (Dan Cottler)
Newsgroups: mod.computers.vax
Subject: RE: Standalone Backup from disk
Message-ID: <8608132024.AA08350@ucbvax.Berkeley.EDU>
Date: Wed, 13-Aug-86 08:08:00 EDT
Article-I.D.: ucbvax.8608132024.AA08350
Posted: Wed Aug 13 08:08:00 1986
Date-Received: Wed, 13-Aug-86 23:34:40 EDT
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Organization: The ARPA Internet
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Approved: info-vax@sri-kl.arpa

>I'm trying to create standalone BACKUP on an RA81. I did @SYS$UPDATE:STABACKIT,
>and followed the directions, no problem.  However, in the "Guide to System
>Management...", it says to change the line in DEFBOO.CMD that reads "D R5 0" 
>to "D R5 E0000000" However, the line in my DEFBOO.CMD reads "Deposit R5 4000"

R5 is used to contain all sorts of boot flags.  If you peruse your 
console media, there should be a file called BOOT.HLP or BOOT.CMD that 
has some info as to whats there.

The most significant nybble is used to hold the root number to boot 
from.  In the case of Standalone Backup, which uses SYSE, the mask
is "E0000000".

The "4" in your R5 tells the bootstrap what type of memory controller 
you have.

To boot standalone backup on your system, set R5 to be "E0004000".


					- Dan 
					  <dcottler@rca.com>