But under OS9 we are limited to 1.5 GB on ALL Models...
http://macos9lives.com/smforum/index.php?topic=2101.msg10763#msg10763

Built-In Memory. 1.99. I want to know more about that supersized Mac OS System itself using 811.9 MB instead of 68.1MB. I am keeping the faith in that we will recover
some of this memory back to the user. In fact "256" Megs are taken for the RAM disk.
I can always pull out memory to make 1.5 or even 1 Gig. of RAM, but OSX benefits from that extra 0.5 RAM. We have 4 slots.
On the AL 1.0 GHz 17" Powerbook you have only 2 slots.
We should look if having more than 1.5 Gigs of RAM we make the system more prone to crash.
Also if 1kWindows test shows a slower system when using with more than 1.5 Gigs of RAM.
Imagine we can use that nanopico BootX loader to fool OS9 think it
only has 1.5 and the virtual RAM Disk is made
before loading OS9. We could call it "2 Gigs patch for OS 9" or "512 Meg RAM disk for 2 Gigs RAM". The benefits of that neglected 0.5 Gig in a RAM Disk for DAW or Photoshop would do wonders. Probably I am delusional with the possibilities.
OFFTOPIC: I hate to pull off memory. It reminds me an x86 P4 triple boot I had with W'98 (Needed less than 768 Megs), XP + XXX 10.4.11.