All, This may be a stupid question. If so I apologize. Do I have to do anything different to boot the arch install media on a board with 4 Opteron 8360 processors (16 core total), or should the kernel just handle however many cores there are? The reason I ask is it always hangs after it says Booting Kernel (immediately after decompress). When I memtest the memory, (I have two sets and I've gone stick by stick with a minimum memory config, and I still get errors at the exact same percentage of every test.) I have rotated each stick in/out with a replacement, and replaced the whole set, but same issue. So I either have to do something different to boot with 16 core which will in turn also address the memory issue, or I have lots of bad ram or a bad mem controller in one of the processors. Hardware Info shows all cores and memory, it's just using it that is the problem :) What say the experts? Do I need to pass a kernel flag, or something similar for the 4 Opteron boot, or does it just smell like multiple failed sticks in each set? -- David C. Rankin, J.D.,P.E.