On older CHRP based hardware, like the IBM RS/6000 7046 B50, Open Firmware offers a maximum of 16MB for kernel and initrd. The last Fedora ppc installer that got below this was Fedora 9. Later kernels boot fine, but not in combination with a "large" initrd.

It may be that insisting on installing a modern OS on old boxes like this is plain silly, but still...

Is it possible to get around this? Is it for example possible to boot the kernel and mount a NFS share with the initrd image as the root fs, and continue loading the installer from there?

Or is it possible to trick yaboot or the firmware to boot anyway?

Ingvar