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Old 06-05-2005, 09:25 AM   #1
LegendBreath
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How can I check if DMA is enabled?


Hi,
Can someone tell me how to check if DMA is enabled and if not, how can I enable it?
 
Old 06-05-2005, 09:29 AM   #2
Bruce Hill
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In a term as root issue "hdparm -iI /dev/hdx" where x is the device
you wish to check. Then read "man hdparm" for details.
 
Old 06-05-2005, 09:36 AM   #3
LegendBreath
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Re: How can I check if DMA is enabled?

Quote:
Originally posted by LegendBreath
Hi,
Can someone tell me how to check if DMA is enabled and if not, how can I enable it?
Umm...
bash: hdparm: command not found
 
Old 06-05-2005, 09:38 AM   #4
Bruce Hill
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As root, mate!
 
Old 06-05-2005, 10:32 AM   #5
LegendBreath
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Quote:
Originally posted by Chinaman
As root, mate!
Emmm... I know that, but, it doesn't work...
 
Old 06-05-2005, 10:43 AM   #6
Bruce Hill
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I don't know...maybe your distro doesn't include it.
Issue "whereis hdparm" and if it's there, then issue
the command with the entire path. If it's not there, then
get the package or get a better distro.
 
Old 06-06-2005, 03:49 AM   #7
Martin Rasch
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Smile Reserved Commands

HDPARM and other system commands are reserved and live in the folder sbin off the / root.
To get to them quickly while in a terminal windows cd /sbin
After you are in the sbin dir do a ls h* . You will see the file hdparm. Executing hdparm
by it's self will list command options. For your question do hdparm /dev/hda for the first hard drive or hdparm /dev/hdb for the second drive. The listing of commands will allow for setting and unsetting DMA access. Why do you wan't to set DMA off. Most times people go to great
pains to try and get DMA enabled for the SPEED advantages. You can also use hdparm to check if the CD drive has DMA set. If you are doing any kind of MUSIC or VIDEO the DMA being on
will be critical to get things to work correcly.

Hope this all helps.
Martin
 
Old 06-06-2005, 05:22 AM   #8
LegendBreath
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Re: Reserved Commands

Quote:
Originally posted by Martin Rasch
HDPARM and other system commands are reserved and live in the folder sbin off the / root.
To get to them quickly while in a terminal windows cd /sbin
After you are in the sbin dir do a ls h* . You will see the file hdparm. Executing hdparm
by it's self will list command options. For your question do hdparm /dev/hda for the first hard drive or hdparm /dev/hdb for the second drive. The listing of commands will allow for setting and unsetting DMA access. Why do you wan't to set DMA off. Most times people go to great
pains to try and get DMA enabled for the SPEED advantages. You can also use hdparm to check if the CD drive has DMA set. If you are doing any kind of MUSIC or VIDEO the DMA being on
will be critical to get things to work correcly.

Hope this all helps.
Martin
You got me wrong... I want to enable it, well thanks
 
  


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