Corey, Start by adding '-s' to the boot-args. This will force a single user boot. If you are getting to the kernel, it should become obvious when kernel start verbose logging. If all you see is grey screen with the apple, then it probably did not make it out of BootX. In that case, stop at Open Firmware (hold CMD-OPT-O-F at boot). Then type 'boot' at the prompt then immediately hold down CMD-S. This will force single user boot, but it will also enable logging to the screen from BootX. You should see messages about BootX loading files: mach_kernel, and Extensions.mkext or all the many drivers. Josh At 2:50 PM -0700 5/27/04, Corey O'Connor wrote: A little background: I installed the 10.3.4 updater to my G4 last night. Sadly, the computer would then refuse to go past the grey apple on light-grey screen. No spinning disk or anything, just the grey screen. The comp has heavily tweaked HW & SW so I'm not bitching, just downgraded to 10.3.3 and everything is fine. Correct me if I'm wrong but the usual boot sequence is: 1. OF loads the first stage bootloader 2. First stage bootloader initializes the computer then loads the kernel 3. The kernel goes off and does it's thing. Now, I'd imagine the problem is occurring either early in stage 3 or late in stage 2. How do I go about debugging these steps? Is there any pointers to some way I could get OF to spit out more info or anything along that lines? Corey O'Connor DogHeadBone LLC http://www.dogheadbone.com _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored. _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.