I'm trying to install OS X on my unsupported mac, using XPostFacto.. i selected the install disk and the destination disk, and clicked install. It began to do it's initial file copying process, but a little after the mach kernel is copied i get an error saying 'unable to continue, failed to write to NVRAM.' I thought maybe the extensions would have to be off for it to write to the non-volatile ram, but i guess you cant really do anything with the extensions off. I really have no idea how to get around this error. any ideas?