> So my recommendation for you is find or borrow an unused hard drive and > find or borrow a OS 9.1 or other OS 9 OS CD set, and update the > firmware with a separate setup, then revert to your usual 10.3.7. > > Don Hi Don, Thanks for your reply. Ironically, the OS 9 CD boot problem was solved by that thing I didn't think mattered anymore--zapping the PRAM. After the zap, I was able to boot and install 9.0.4, then update it to 9.1 using the Apple download, and update the firmware to 4.1.9f1. Oy! More than I expected, but at least I'm ready to swap the CPU. Matthew __________________________________ Do you Yahoo!? The all-new My Yahoo! - What will yours do? http://my.yahoo.com