On Wed, Apr 12, 2006 at 03:38:22PM +0100, Alan Cox wrote: > Ask the hdparm maintainers. Its mostly obsoleted by blktool and the like > which are generic # hdparm -M 128 /dev/sda /dev/sda: setting acoustic management to 128 HDIO_GET_ACOUSTIC failed: Inappropriate ioctl for device # blktool /dev/sda acoustic-mgmt 128 HDIO_SET_ACOUSTIC: Inappropriate ioctl for device The world is still not perfect :-) Btw. it's kernel 2.6.16, ata_piix, and a PATA drive. The new ata_piix now uses UDMA/100 while the old IDE ICH driver always limited the first disk to UDMA/33 for no obvious reason. So I'm quite happy with libata and can wait a little longer for acoustic management to be implemented :-) Gabor -- --------------------------------------------------------- MTA SZTAKI Computer and Automation Research Institute Hungarian Academy of Sciences --------------------------------------------------------- - : 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