Re: Problem to turn DMA on

[David Baron <d_baron@012.net.il>]

> Hi all.
>
> I got a very old notebook running debian 4.0 with kernel 2.6.25 and 2.6.21.
> It has a 4GB IDE harddisk. I'm trying to enable DMA with hdparm, but it is
> not working.
>
>  The command I run and its output are:
>
> # hdparm -qc3 -qm16 -qd1 -qX66 -qS120 /dev/hda
>  HDIO_SET_DMA failed: Operation not permitted
>
> Did someone get this message before or know to solve it?
>
> Thanks,
>
> Rafael

What chipset, particularly the IDE chips, are on that very old network?

You may need to compile the kernel with the appropriate driver rather than the 
ide-generic. I had this with a via  chipset MB.