There are certain chipsets that don't allow SATA burning... most of them are found on AMD boards. NForce is the biggest one out there that is widely known but there are others too. I have to use an external drive in order to burn since I have an NForce4 MCP61 chipset and my board doesn't have IDE either (IDE PCI cards don't work in OS X... believe me, I've tried numerous)... (although if anyone finds one, let me know :-).

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