Hello, > OK. I guess fedora core 4 installed 2 kernels in my laptop (I assume > this because I have two options to choose from when booting: > 1. Fedora Core (2.6.11-1.1369_FC4smp) > 2. Fedora Core-up (2.6.11-1.1369_FC4)) That's ok. > My laptop has hyper-threading capabilities so the default kernel is smp > one, is this the best one for me to boot. From second option, up means > uni-processors I guess, right? I think, if your laptop has hyper-threading processor, the best choise the smp kernel... > Does every FC4 have 2 options (smp and up) installed by default? No, only if you have smp or HT system. > And finally where do I get kernel-devel for SMP? Also what's the extact > name? So, you install up the kernel-devel package only, because the smp option you find here (in kernel config (make menuconfig)): "Processor type and features-> [*] Symmetric multi-processing support" and etc. Bye, Emeric