http://www.bytebot.net/geekdocs/ibook/fedorappc.html
Thanks for the pointer. Eventually I booted from Apple DVD and used Apple Disk Utility to repartition the harddrive into "3 partitions" (27MB hfs+ Journaled, 1GB free [for swap], and 11GB free [for FC4 root]). Then I fresh-installed Mac OS X, got Apple's current updates, then fresh-installed FC4t2. DiskDruid said there was only 1 Apple_Free partition of 12GB. I kept going, and took the required detour when DiskDruid said I had to have an Apple_Bootstrap partition. Installing FC4t2 succeeded; total time (Apple Disk Util repartition, Mac OS X install, Mac OS X update, FC4t2 install) was about 2.5 hours, almost evenly split between Apple and Fedora. --