I am currently running the latest build of Mountain Lion on my mid-2009 macbook pro.
Due to it being sold soon I need to reinstall Snow Leopard onto the laptop using the disk.
I have tried using the internal superdrive and an external superdrive to boot from, and I can hear the disk being read but it doesn't seem to load. All i get is the spinning symbol waiting and after approx 5 min it displays the grey no entry sign.
There is nothing wrong with the hdd as when i press the Alt button when booting i can boot into the primary partition or the recovery partition without any issues.
I can also reinstall Mountain Lion without any problems.
I have both the Leopard and Snow Leopard disks, but can't boot from either of them.
Any suggestions on how to fix this problem and get SL installed? Is it a problem with having the ML recovery partition?
Thanks in advance