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Re: Permissions denied when enabling DMA



#include <hallo.h>
* Wayne Gemmell [Sun, Aug 03 2003, 12:05:18AM]:
> Hi
> >
> > The kernel you're using doesn't have support for your IDE chipset.  This
> > is why the kernel didn't enable DMA on its own.

No, the installation kernels do not enable DMA by default because of an
unknown number of not-yet blacklisted data-corrupting drives.

> How would you recomend that I get support? apt-get *new-kernel*, or apt-get 
> source? Are there maybe modules that I should be looking for?

What you prefer. If you know how to read english text and edit
lilo.conf, you could try with the backports from Adrian Bunk (see
apt-get.org).

> Do you mean that I shouldn't use hdparm at all? I have a laptop that is set by 
> default with DMA and 32bit mode set off, is it also BAD to enable these on 
> the laptop because I am able to. How do I make this a default on boot?

That's a kernel option or via hdparm in an init script or via 
"echo using_dma:1 > /proc/ide/.../settings".

MfG,
Eduard.
-- 
Da die Trojaner offensichtlich keinerlei Anstalten machten, das
sogenannte "Trojanische Stinktier" in ihre Stadt zu ziehen, mußten sich
die Griechen wohl oder übel etwas anderes einfallen lassen.
  -- Bernd Pfarr



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