Please excuse my ignorance I am new to the MAC world, but do have extensive exposure to PC's and other forms of equipment. I followed to the letter the guide on building and installing from Niresh, as follows :- Obtained download from Niresh, Mavericks 10.9.0 dmg file and win32image util. Created pen drive and transferred file image, all OK. Boot pen drive fine, start build with amd -v etc. etc. etc. every flag/switch/disabler/enabler known suggested on the net. The system continues to stall at "PCI Configuration Begin", even took out all PCI devices still no joy. What had appeared a very simple task is proving quite cumbersome, or perhaps the factor is me I am more than willing to accept that. My PC config is: AMD Athlon LE-1620 2.3Ghz BIOSSTAR Motherboard GF7050-M2 with integrated NVIDIA GEFORCE 7050 1GB of Memory Please help as I am very eager to look at the MAC OS and any help would be greatly appreciated.