Paul & Brenda Ahlstedt wrote:
> Mikkel L. Ellertson wrote:
> 
>> Paul & Brenda Ahlstedt wrote:
>>  
>>
>>> Hi gang,
>>>
>>> Say, I installed Knoppix on a lower end desktop because it has the
>>> ability to turn on DMA hardware acceleration - without it, this
>>> particular computer is dead in the water.  I have installed my favorite
>>> distro on it now (2005 Limited of course) and it is slow - my question
>>> is, I have turned off all the KDE animations, prefetching, shading, blah
>>> blah blah, but it is still slow.  How can I turn on the DMA under
>>> Mandrake 2005 to make my old favorite desktop KDE work quicker?  It sure
>>> does make quite a difference - it has an apparent increase in speed of
>>> some 5 or 10 times under Knoppix.
>>>
>>> Paul
>>>
>>>   
>>
>> If you are talking about hard drive access, take a look at the
>> /etc/sysconfig/harddisks config file.
>>
>> Mikkel
>>  
>>
> I found the file you are talking about, and it says that a number in the
> configuration needs to be changed to enable DMA for the hard drive -
> problem is, I don't know how to do that and worse, I am a Newbie's
> Newbie if you know what I mean.  Were this a Gates Box...
> 
> Anyway, could you tell me exactly how to enable the change?
> 
> Many thanks,
> 
> Paul
> 
In the file, find the line:

# USE_DMA=1

Change it to:

USE_DMA=1

This will tak affect on the next boot. (It is accessed by
/etc/rc.d/rc.sysinit - you can run "hdparm -d1 /dev/hda" to turn on DMA
for the first hard drive.

You can run "hdparm -d /dev/hda" to see if it is already turned on. If
it is, then you don't gain anything by editing the file. You can check
most of the setting just by running "hdparm /dev/hda".

Mikkel
-- 

  Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!

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