> Is there some generic way to figure out wheter a device supports it? > What devices normally support prefetching? Disks only? It depends on the controller not the device - generally older controller support it only for disk devices. 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