Classic Mac OS Software (Discussions on Applications) > Hacking the System, Mac OS 9.3, and Beyond !

OS 9 with 2GB of Ram.

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nanopico:
So here is one that i find odd, maybe someone else can provide insight to this.
I inherited an G4 400 Gigabit.   The cpu was upgraded with a gigadesigns 800mhz g4 and an Nvidia Gforce MX4 from a dual 876MHZ G4.
So here is where the odd part comes in.  In every other Mac (g3 or g4) I own I can put 2 GB of ram in it and it is recognized in OS X, but OS 9 only sees 1.5 GB.  This I believe is fairly common knowledge and what I expected of this machine, but when I got OS 9 installed it sees and reports all 2GB of ram and appears to be using it.  Has any one else seen this before?

MacTron:

--- Quote from: nanopico on August 29, 2015, 09:49:23 AM ---... but when I got OS 9 installed it sees and reports all 2GB of ram and appears to be using it.  Has any one else seen this before?

--- End quote ---
Can you please attach a screenshot of "About this Computer" window from this machine?

nanopico:
Here's the about this mac and the system profiler.
Interestingly mac os takes up 542 mb.

DieHard:
You have totally normal behavior... you are still limited to 1.5/1.6 GB

This is taken from:
Mac OS 9.2.2 Maximum RAM and Real world observations


--- Quote ---Finder shows Memory used per application and the System itself using 564.9 MB (What the F%$k), Also the largest unused Block (of available memory) is 1.42 GB.... wait a minute we add 512MB and we only get .01 GB more in available memory (from 1.41 to 1.42) and the OS itself is now bloated from 68.1MB to 564.9 MB (496.8 MB increase) ??!!

We can theorize that the ceiling is actually 1.5 GB (or maybe 1.6 GB since we now have 1.42 GB unused) and we can assume that it does not know what to do with the extra 512MB so it adds it to the Mac OS category as used by the system itself and it like a dead fish or more like a wasted layer of resources that we cannot get to :(
--- End quote ---

To read all the details...
http://macos9lives.com/smforum/index.php?topic=2101.msg10905#msg10905

nanopico:
Good to know.  I've just not seen this behavior before with 2gb installed.

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