I have tried to install Snow Leopard on my Macbook running 10.5.8, but the installation fails every single time. I have verified and repaired both the disk and the disk permissions, reset the PRAM, and removed all external devices from the system. Something of importance, the installation always makes it through the first reset, and then crashes afterwards during the second part of the installation. Any help or advice would be great in this situation. I am wondering if I should erase the disk, and install Snow Leopard, and then restore from a Time Machine backup, but this would be a last resort method.