On Mon, 22 Jun 2009 12:37:08 +0100 Gaby Vanhegan <g...@vanhegan.net> wrote: > > I have a machine with 4GB RAM and a quad core Xeon processor. Will it > be able to see the full 4GB of RAM or will I have to tweak bigmem, > either by building a custom kernel (really don't want to do that) or > by using config()? > You can't use config to toggle bigmem. You need to set the bigmem variable to 1 in /usr/src/sys/arch/amd64/amd64/machdep.c, then you compile and install a new kernel.
http://www.openbsd.org/faq/faq5.html#BldKernel explains how.
