Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!romp!auschs!awdprime!stingray.austin.ibm.com!marc
From: marc@stingray.austin.ibm.com (Marc J. Stephenson/140000;1C-22)
Newsgroups: comp.unix.aix
Subject: Re: Taking memory out of an RS/6000
Message-ID: <8032@awdprime.UUCP>
Date: 29 May 91 14:03:27 GMT
References: <1991May29.024542.1596@menudo.uh.edu>
Sender: news@awdprime.UUCP
Organization: IBM AWD, Austin
Lines: 28

In article <1991May29.024542.1596@menudo.uh.edu> matt@karazm.math.uh.edu (Matt Emerson) writes:
>For complex reasons, I needed to take 8Mb of ram (one memory card) out
>of an RS/6000 model 320.  Now that it has only 8Mb of ram left, it won't
>boot. It gives error 949 on the red 3-digit display (means direct-attached
>disk isn't responding, or some other seemingly irrelevant problem).
>
>Is there anything I can do to avoid reinstalling AIX?
>
>--
>Matt Emerson
>matt@karazm.math.uh.edu

Yes, there is something that can be done - you will need to edit 
/usr/bin/bosboot and then rerun bosboot -a.  If you can temporarily get back
that 8MB card to get back to 16MB, then you won't need to boot in maintenance
mode; otherwise, you will.

After you've booted your machine, (after running /etc/continue if in 
maintenance mode), edit /usr/bin/bosboot.  Look for a comment which will say
something like "If there is only 8MB of memory, must compress the RAM disk".
Comment out the "if [ "$sizemem" -le 8192 ]" the "then" that follows, then
the "fi" which follows that.  Write the file back to disk.  sync if you
are in maintenance mode.  Then, run bosboot -a.  You should then have
a system which will boot in 8MB.
-- 
Marc Stephenson		      IBM PSPA (Personal System Programming - Austin,TX)
DISCLAIMER: The content of this posting is independent of official IBM position.
marc@stingray.austin.ibm.com 	VNET: MARC at AUSVMQ  	IBM T/L: 793-3796