> all we can use is how the BIOS configured it. I suppose BIOS does it by > issuing trial commands which I don't think adding to libata is a good idea. The BIOS does it by asking the hardware somehow. I traced one or two BIOSes that far. The info is there but its not documented in the slightest so only ACPI makes it visible via the BIOS. > > Can you please lemme know what you don't like about the current > implementation or what other approach you have in mind? I don't like > Nvidia PATA either but there are a lot of people using it out there. We seem to be able to trust the drives and BIOS ACPI data for Nvidia (at least what I have seen), so I guess we should simply declare the cable type unknown, 80 wire if ACPI says it is and then do the drive detect side ? Alan - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html