My intel macbook wont boot from snow leopard install dvd
I have intel 2gh MacBook late 2009 aluminium running 10.5.8 and I bought the original dvd of snow leopard to update it to 10.6.3 but my mac cant readthe install dvd and injects it out all the time. How can I do the update or install a fresh copy to a new disk?
What is the problem?
Thanks