I have a dual Opteron (AMD64) machine that has 8 GB of memory installed and needs to utilize all 8 GB.
However, currently the processors are running in 32 bit compatibility mode under 32 bit RHE. So my question is: would it be possible to recompile the kernel as 32 bit with High Memory support [> 4 GB] (ie. is this an Intel only option or will this work on AMD64) or will I have to install a 64 bit operating system in order to use all 8 GB?
Thanks!
We've got a quad Xeon (which is 32bit) with 10GB of RAM using RHEL2.1. Seems to be humming along just fine. What makes you think that it's not using all of your memory?
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