Re: AMD64-generic doesn't see all 4GB RAM?

Thanks Joost + JanIt was the Tyan BIOS memory mapping problem as you said.I had already turned the MTRR to discreet mapping, but it did notoccur to me to change the Software Memory Hole to software controlled, rather than disabled. Once I did that, the system happily reports the 4GBof

Re: AMD64-generic doesn't see all 4GB RAM?

Actually, Joost or others, do you know what difference the memCLK BIOS setting has?With MTRR set to discreet, and Memhole Mapping set to software controlmy system boots fine, and I can see 4GB RAM. However, I then install xen then it won't boot. It fails activating the second core of the CPU. If

AMD64-generic doesn't see all 4GB RAM?

I have a dual core Opteron 265 running in a Tyan K8WE (S2877) motherboard with4 x 1GB RAM DDR modules. The BIOS displays the RAM as 4094 MB, but usinga fresh install of testing/unstable from the AMD64 etch net-installer, I can still only see 3.2 GB out of the 4GB RAM...I am using the amd64-generic