during the install of fc3 you need to create a 1 meg apple bootstrap partition. disk druid allows you to do this and it allows you to create the correct fs. but what it doesn't do is keep it up at the beginning of the disk. this results in a non-booting system if you've installed a large disk on an early imac.
It should be 800K, not 1M. IIRC Disk Druid doesn't actually let you specify that?
dwmw2: no, disk druid's smallest size is currently 1MB as opposed to being 800K kevin: the large disk on an early iMac issue and not having bootstrap as the first partition isn't the problem imho; how's your pram doing? Please provide information about your disk here as well
Open firmware will happily boot off any partition. The only reason to have an Apple_Bootstrap at the start of the disk is to boot off that if your PROM gets zapped for some reason IIRC.
This should be fixed in anaconda-10.2.0.20