Re: DMA is turned off on my HDD

[Anton Liaukevich <anthonyl@uvaga.by>]

Pavlos Parissis wrote:
> > Pavlos Parissis wrote:
> > > > In the beginning of July I reinstall my Debian system (lenny). At once I
> > > > discover that loading cache in Aptitude (ncurses-UI mode) is very slow
> > > > and in general my system is very slow.
> > > >
> > > > In several days I discovered that DMA is turned off on my HDD (fsck
> > > > sayed it while Debian booting). Please, help me turn on DMA mode.
> > > [snip]
> > > > I had scanned my hdd with native WD scanner and hadn't detected any
> > > > error. Memory scan (memtest86+) also hadn't detected any error.
> > > > Moreover, Windows XP on another partition of this hdd working normally
> > > > and HDD Health program on it (for S.M.A.R.T viewing) don't predict
> > > > T.E.C. in the near future. Also after previous installation of Debian
> > > > lenny my hdd was working fast.
> > > Use hdparm command to see if the DMS is enabled, if not enable it with the -d flag. If that action makes your system "faster" configure /etc/hdparm.conf to
> > > enable the DMA on boot.
> > >
> > > Hope it helps,
> > > Pavlos
> > I have tried using "hdparm" (under root) command but it don't help.
> >
> > command "hdparm -d /dev/hda" outputs:
> > /dev/hda:
> >   using_dma     =  0 (off)
> >
> > command "hdparm -d 1 /dev/hda" outputs:
> > /dev/hda:
> >   setting using_dma to 1 (on)
> >   HDIO_SET_DMA failed: Operation not permitted
> >   using_dma     =  0 (off)
>
> As Ron has written you may face a problem with the driver which is being used
> by the kernel for managing this disk.
> Try the following to see which driver is being used.
>
> readlink /sys/block/hda/device/driver
>
>
> Cheers,
> Pavlos

"readlink /sys/block/hda/device/driver" outputs:
../../../bus/ide/drivers/ide-disk