Sebastian Kuzminsky wrote: >
So how do I know what PIO mode the drive wants to use? And how do I tell the HBA what PIO mode to use?
You don't do either of those. The device driver takes care of it, if needed. In this case, they were both likely set up for PIO4. Cheers - : 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