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How to change VM value down?
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Dedicated MacNNer
Join Date: Aug 2000
Location: Salvador, BA - Brazil
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I have a G4 400, 9.0.4 and 448 RAM. After reading a topic I'm turning my VM on just to see what happens... but I want to leave it with 1 MB only, but I'm not beeing able to change the value under 449?! Why?
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Think Diferente!
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Think Diferente!
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Registered User
Join Date: Apr 2000
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That value is your total RAM.
449 total - 448 physical = 1 virtual 
It simply shows the TOTAL RAM you will have on reboot rather than how much is actual VM.
Cipher13
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Senior User
Join Date: Mar 2000
Location: France
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No, Cipher, 449 is the amount of space that is used on the disk, and indeed it's the total of available ram:
To work properly, the VM is equal to 'your ram' + 'what you want'
On *nix, you must often make a partition for the VM, it is suggested to choose a size = 2 x 'your ram' (or 1.5 * 'your ram', I don't remember)
Well, if you have 448 MB of RAM, you should turn Virtual Memory OFF instead of setting it to 1 Mo
[This message has been edited by noliv (edited 12-28-2000).]
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-noliv
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Dedicated MacNNer
Join Date: Aug 2000
Location: Salvador, BA - Brazil
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Hey guyz? Who's right here? 
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Think Diferente!
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Think Diferente!
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Senior User
Join Date: Mar 2000
Location: France
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actually, cipher is right too, but the space that is occupied by the VM invisible file is not 1 MB but 449...
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-noliv
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Grizzled Veteran
Join Date: May 1999
Location: Pasadena, CA USA
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No, they're not both right. 448MB RAM +1 is the amount of VM used on the hard drive. Physical RAM +1MB is the lowest setting available in the Mac OS.
Scott
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Registered User
Join Date: Apr 2000
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Fine, I'll rephrase:
That value is your total RAM.
449 total - 448 physical = 1 virtual
It simply shows the TOTAL RAM you will have on reboot rather than how much is actual VM.
Now the 449 ALSO shows how much disk space will be reserved by the Virtual Memory Storage file.
Cipher13
[This message has been edited by Cipher13 (edited 12-28-2000).]
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Dedicated MacNNer
Join Date: Aug 2000
Location: Salvador, BA - Brazil
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Hey guys... thank you so much for your help , BUT, I guess I'm going to leave the VM OFF for a while...
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Think Diferente!
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Registered User
Join Date: Apr 2000
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Your loss (er... gain in HD space )
Cipher13
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Senior User
Join Date: Mar 2000
Location: France
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Originally posted by slboett:
No, they're not both right. 448MB RAM +1 is the amount of VM used on the hard drive. Physical RAM +1MB is the lowest setting available in the Mac OS.
It's funny, we all agree each other...
I don't know if what I wrote is correct, but what I wanted to write was correct (maybe a translation mistake... I'm tired to talk in english...)
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-noliv
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Registered User
Join Date: Apr 2000
Status:
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We're both right, we just each left out a detail
Cipher13
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