On Fri, Jul 18, 2003 at 11:35:24AM +0000, John Little wrote: > I'm using 3.0r0 (2.4.18-bf2.4 kernel) with ASRock K7VT2 m/board and Maxtor > 30GB ATA133 hard disk. > I tried switching on DMA using hdparm -d1 /dev/hda but got the following > error message: > > HDIO_SET_DMA failed: Operation not permitted I take it you ran hdparm as root? David