On Tue, Feb 10, 2004 at 09:16:25AM +0100, Andreas Wohlfeld wrote: > On Tue, Feb 10, 2004 at 09:03:30AM +0100, Lionel Elie Mamane wrote: > > NForce3 150 Pro chipset) with 4GB of memory installed: The BIOS (and > > thus Linux) recognises only between about 2.5GB and 3.5GB of RAM, > > > > Does anyone have any sort of clue what is happening here? > > > You have to read the mainboard manual. It states that this is normal > behavior due to memory space allocation of chips on the mainboard and > graphics card. > 4 GB minus 0.4 GB for mainboard chipset minus AGP apterture size sounds > about right. > > It's a limitation of the 32 bit architecture. It does not happen with > server mainboards in 40 bit flat or 36 bit PSE mode. Is there a way to go into that mode with any board, eg 64bit native Debian? Or does it require bios support? Chris
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