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System taking too much memory. Blast from the past.
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Addicted to MacNN
Join Date: Oct 2001
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Not kidding.
Has it been the same all along.? I don't recall good old Mac OS being a RAM eater, the only thing I could remotely think of is Virtual Memory but that's deactivated. So, having ruled that out, what else could it be.? Macintosh is a G4 MDD 1,25GHz with 2 GB RAM.
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Clinically Insane
Join Date: Oct 2000
Location: Los Angeles
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Haha yeah, blast from the past. It definitely didn't eat RAM like that. Are you running Classic or direct 9.2 boot?
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"The natural progress of things is for liberty to yield and government to gain ground." TJ
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Moderator  Join Date: Apr 2000
Location: Gothenburg, Sweden
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Should be a native boot, right? I seem to remember that Classic always gave you 1 GB of RAM, not matter how much real memory your box had.
Some googling reveals several sources claiming that OS 9 "only" supports 1.5 GB of RAM. That would mean that the OS actually uses just over 100 megs - still a lot, but not absurd - and is just hiding the rest because it cannot be used..
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The new Mac Pro has up to 30 MB of cache inside the processor itself. That's more than the HD in my first Mac. Somehow I'm still running out of space.
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Senior User
Join Date: Apr 2002
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Originally Posted by P 
Some googling reveals several sources claiming that OS 9 "only" supports 1.5 GB of RAM. That would mean that the OS actually uses just over 100 megs - still a lot, but not absurd - and is just hiding the rest because it cannot be used..
That's correct.
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Administrator  Join Date: Jun 2000
Location: California
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Up to 1.5 GB can be assigned for general use. You can declare a RAM disk for the remaining 512 MB.
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Clinically Insane
Join Date: Oct 2000
Location: Los Angeles
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Silly me, didn't even think about the fact that you couldn't get that About This Mac window if in Classic.
It's funny to think about Mac OS 9 not being able to use more than 1.5 GB. Times do change.
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"The natural progress of things is for liberty to yield and government to gain ground." TJ
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Addicted to MacNN
Join Date: Oct 2001
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Hey, thanks a bunch. In all honest didn't expect too many replies and less in such a short time span. Knowledge shows !!!
Are you running Classic or direct 9.2 boot?
Should be a native boot, right?
It is indeed a native 9.2 boot. Out of boredom.
Some googling reveals several sources claiming that OS 9 "only" supports 1.5 GB of RAM. That would mean that the OS actually uses just over 100 megs - still a lot, but not absurd - and is just hiding the rest because it cannot be used.
Thanks for the research I should have done. To confirm this, I booted up my old Yosemite G3 with 1 GB RAM. This is what 'About This Computer' says on the G3. I understand this reflects what P says.
Up to 1.5 GB can be assigned for general use. You can declare a RAM disk for the remaining 512 MB.
Interesting. Thanks for pointing that out.
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