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Serious Ram problem, Can Windows 2000...

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Apr 13, 2001
I have a serious problem, Windows 2000 doesnt write to more than 1GB of my ram. The other 1GB is wasted and nothing can allocate it. Is this a limitation of the operating system? Windows Me also wont read anything past 1GB. I have tried everything.
Are you rendering or using a large database? I don't really know what is going on with your machine but it maybe a problem with ddr and windows 2000. u using sp2? try posting this in software section too.
make sure to go into the properties on my computer and go to performance and change the virtual memory size and see if that helps-the limie is 2.5gig for win2k
ok, for the vitrual memory, is it true its supposed to be 3X the amount of memory in your system and the min the amount of mem in your system?
So for min, I put 2048MB, and for Max, 6144MB?
Go to Control Panel/System Win2K will display the ammount of RAM you have installed. I use my system for high end CGI work and very few programs will use that amount of memory. Even a large scene with a large number of textures in Lightwave will struggle to use 512Mb.
If you have a video editing package, such as After Effects try loading a large avi file in. You will soon know how much RAM is being used by Windows. These programs will load as much of the file as possible into RAM without using Vmem. This allows the edited footage to be played in realtime.
Even though you can use a maximum of 2.5Gb in Win2k, the program will still use Vmem. I have tried setting the swap file to 0Mb and Windoze still refuses to let me run without one.
oc jason said:
Id leave ti alone, windows 2000 unlike 98 and ME automatically sets the correct amout of mem to use?!

I have 512mem on a 2K system. It set itself to 768-1586. should I change that to the same min and max?

If windows can't address any more than 2.5 GB of memory, and you have 1 GB of memory, then you should set min and max pagefile size to 1 GB or less.

The 3x recommended setting is probably more specific to MS's recommended 256 MB of RAM, 768MB pagefile configuration, and probably does not scale linearly to larger sizes of RAM. Especially if Windows can only address 2.5 GB of memory addresses.

Does anybody have a solid number and source on the memory addressing??

Everyone else's comments are also very good and worth looking into.

There are a number of registry hacks to force windows to leave the pagefile alone, such as disable paging executive, etc. I would worry about other problems before messing with registry settings, however.