After grepping through the root.bin image for the correct paramters, and applying them using the SRM -fl option, I was able to start the installer. So the real issue is that the default kernel commandline contained in aboot is not making it through to the booted kernel.
-- Brian S. Julin -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]