>>>>> "SS" == Scott Saccone <ssaccone@xxxxxxxxxxxxxx> writes: SS> FC2/x86_64 (2.6.5-1.358smp) ran fine with 2GB RAM, but after SS> installing another 2GB it only detects 3GB. GRUB 0.94 also only SS> detects 3GB. No problems with 8GB on x86_64 here (using two 2 Opterons 250s on a Tyan S2882). Grub can certainly handle that much memory. (It even handles 6GB on 32-bit Xeon system.) I'd guess there's an issue with your BIOS, or the Kernel's interaction with it. - J<
