Enable DMA on a Travelmate 8005

[Marco Calviani <mirtux@studenti.fisica.unifi.it>]

Hi,
i would like to enable DMA on my laptop (with a Intel 855GME chipset) since this is the results from hdparm:

Code:

hdparm -t /dev/hda

/dev/hda:
 Timing buffered disk reads:   10 MB in  3.30 seconds =   3.03 MB/sec

very poor.
However when i try to enable it with hdparm -d1 /dev/hda i've got the error:

Code:

/dev/hda:
 setting using_dma to 1 (on)
 HDIO_SET_DMA failed: Operation not permitted
 using_dma	=  0 (off)

Maybe i've got some IDE module missing?

Regards,
MC