Path: utzoo!mnetor!uunet!husc6!rutgers!ames!sdcsvax!ucsdhub!hp-sdd!ncr-sd!crash!jeh
From: jeh@crash.cts.com (Jamie Hanrahan)
Newsgroups: comp.os.vms
Subject: Re: DUMPing into pagefile
Message-ID: <2207@crash.cts.com>
Date: 26 Dec 87 08:40:45 GMT
References: <UWAVM.ACS.WASHINGTON.EDU:LB@EPmLD*>
Reply-To: jeh@crash.CTS.COM (Jamie Hanrahan)
Organization: CMKRNL Press, San Diego, CA
Lines: 22
Summary: Another two cents' worth

In article <UWAVM.ACS.WASHINGTON.EDU:LB@EPmLD*> SEYMOUR@phast.PHYS.WASHINGTON.EDU writes:
>Use sysgen to set SAVEDUMP to 1  (non zero).
>That tells the system to do the dump into the pagefile
>instead of into sysdump.dmp.

Ahh, not quite.  The absence of the file SYS$SYSTEM:SYSDUMP.DMP tells the
system to do the dump into the pagefile.  Setting SAVEDUMP to 1 tells the
system to not make the blocks so used available for paging until you use
the SDA COPY command on the pagefile.  

[An aside:  I wish folks would leave the Subject: line alone when posting
followups.  I just posted a reply to the same original article after doing
a ^N in rn and seeing no definitive answers already extant.  Of course, in
this case, I'd have still posted my reply after seeing the above-quoted
article, as the above-quoted article isn't quite right, nor is it complete;
but at least I'd have been able to post one reply instead of two.]

>I do it. It works. It's wonderful for rd53 systems.

You got that right!  (It was originally invented for MicroVAX 0.5's... er,
VAX 730's, some of which were crippled, er, sold with just two RL02's 
(10 MB each) for disk storage...)