[EMAIL PROTECTED] wrote: > fred writes: >> Hello all, >> >> I am trying to fix an issue with my dual xeon ibm server, it only detects >> 3GB or RAM but I have 4GB: > [...] > > I have seen this problem under Linux on IBM Intellistations (6225). > IBM pointed me to a tech document (the number of which I do not > remember) that says when the machine detects more than 3GB, it uses > some of that memory internally for ... stuff. Still, I find stealing > 1GB quite unacceptable.
This question is answered almost once a week. Search the archives and you will find plenty of explanations, both long and short. Short version: you cannot use memory near 4 GB on 32-bit operating systems (it's a hardware limitation). You can either compile a kernel with PAE (http://en.wikipedia.org/wiki/Physical_Address_Extension) or a 64-bit version of the operating system (in FreeBSD it's called AMD64 since AMD was first to create the hardware, http://en.wikipedia.org/wiki/AMD64).
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