From: Phillip Meza <[EMAIL PROTECTED]> Date: Fri, 2 Apr 2004 09:55:37 -0700 (MST)
Thank's Will, Let me get "specific" here its needed. The S900 thats
giving me problems has never run with anything above OS 9.1 I have 2
machines operating via KVM. This one has RAM totaling about 910MBs
from 3 different sources, OWC/128 (2), Velocity/128 (4) and unknown/64
(2) all appear to be FPM sticks, except the 64's I can't identify so I
pulled. I've proceeded with several troubleshooting methods, including
what you prescribed above Norton Version 6 specifically and DW 2.1 &
3.0.1. So with this in mind, is it memory? I've "moved and/or eliminated"
sticks, doesn't matter OS9 wasn't as "picky" it seems?
I actually started with using a different HD a smaller 20gig WD, 2 partions
same problems. by the way these are connected via an Acard 6280
I'm back more notes... I pulled the WD with "panther" and installed it
into my "Jaguar" box...its stable! this machine has an interleaved Gig of
Ram. so it appears I have suspect RAM in the "original" box.
Your thoughts (or anyone else) on a solution would be helpful here... as always greatful, Phil
Well with the new details it does indeed sound like RAM issues.
Here's what I found with my RAM issues. OS 8/9 will put up with just about any RAM configuration and even defective RAM will often run fine. You start seeing problems when you upgrade your CPU to speeds over say G3 350 MHz. Then there's OSX. Starting with Jaguar 10.2 each and every upgrade found more RAM issues on my machine. Some more then others. I think it was 10.2.5 which resulted in my machine refusing to run until I tracked down all my RAM issues. Apple slowly then quickly tightened up RAM specs for OSX in an effort to get every drop of speed out of the Mac OS which people were complaining was way too slow. I like many Umax users had a mix of RAM. the older 70ns RAM all 8mb sticks that came with the machine had to go with 10.2 even though it was fine with older OSX and ran great in OS 9.x and older. Removing this RAM fixed things for a while . Then 10.2.5 came along and if OS 9.x hadn't ran so well i would have thought it was time for a new motherboard or new machine. I ran all the tests RAM checked fine. Problems wouldn't go away. I am lucky enough to live in a city that has a local RAM builder shop. They've got one of those $100,000 plus RAM testing machines. In exchange for buying one RAM stick from them they tested and labeled all my RAM. All my RAM was good but I'd been interleaving
EDO and Fast page RAM together which is a no no. It's ok to mix both EDO and Fast page RAM on the same machine as long as they are not used as pairs together interleaved. This is according to them.RAM is often not marked so one knows for sure what it is. Though there is at least one web site which helps with some chips.
Your 128 mb sticks are not going to be the older 70ns RAM as I don't think any 128 sticks were made back then. Your Velocity RAM is immediately suspect and 1 of the two OWC 128 sticks I bought was bad from day one. Back in the days of high priced RAM it was more then rare to get bad RAM. The days of cheap RAM brought all sorts of trouble with RAM.
Nancy is right your going to have to test your RAM. In OS 9.x there are several apps that can be used to test your RAM. Jeff W has the info on the RAM sandwich testing method. I never quit understood exactly how to do it. So look in the long term archives which I don't know the address of or perhaps Jeff who has been missing for a while will once more chime in with the info. You can also just use the RAM testing Apps as is one stick at a time. Gauge Pro, XLR8 and RAMometer are the apps that come to mind. Hope this helps. Wish it was possible to be more exact and more quickly fix RAM issues. Will S
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