I have been at this for a while and I just can;t seem to find the info anywhere on the web. Namely, how do you build a complete darwin that is capable of at least getting into single user mode. I have successfully built xnu for 8C46 but when I try to put it on a target running 8C46 as an alternate kernel it wedges really quick (Gery screen, square corners, grey apple). I need to make a slight change to the kernel so I figured I would first get the existing mach_kernel which should be the same as what was installed on the target but one thing I notice is the new 8C46 kernel is almost twice as big. Debugging stuff? I followed the instructions on http://opendarwin.org/projects/ darwinbuild/doc/tools/index.html#fetch to get the xnu to build. Do I have to specify each and every package individually to get an entire build? Should'nt a build of 8C46 mach_kernel work if I put it on a target 8C46 system?