> Is there a way to backlist the old devices to not use UDMA at all? DMI > would be a good idea for > detecting old devices. Is something like this possible? You can implement a filter method. Presumably the data sheet and errata tell you what the problem is and how to detect it. That will be your starting point. 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