I am a noob to Linux, but I've been able to follow the FC8 script at http://fedoraproject.org/wiki/Docs/CustomKernel?highlight=%28kernel%29 For the kernel config, I used the kernel-2.6.23.9-i686.config After modifying the highmem switch successfully using the script (it looks good in .config), I followed the script down to the rpmbuild command. I used the "Build all flavors" format, and got this response at the end. I assume I'm missing something from my Dev environment, it's the default from the FC8 i386 DVD. RPM Build Errorsbad exit status from /var/tmp/rmp-tmp.19630 I'm building linux on a asus P5K SE with 8Gig ram, and I'm going to use Blender, so I want to maximize my memory usage. Any suggestions are much appreciated!