turn off HD DMA at boot time

mrosenlof

Is there a kernel parameter (command line) that I can set in my GRUB menu so that DMA will be turned off at boot time?

I'm booting a mini-itx board with a compact flash disk in an IDE adapter (minimal configuration). I get several errors about DMA timeouts after the 'starting Ubuntu' message at bootup. It takes a very long time to get to the point where init starts up and then the boot seems to progress at a more or less normal speed.

thanks for any help!

twisted_steel

To disable DMA completely, it looks like the parameter is

Code:

ide=nodma

If you only want to disable DMA on a specific drive, the parameter is

Code:

hda=nodma

where hda is the device.

mrosenlof

Thank you!

The ide=nodma parameter got me past this.

January 3rd, 2005	#1
mrosenlof 5 Cups of Ubuntu Join Date: Dec 2004 Beans: 18	turn off HD DMA at boot time Is there a kernel parameter (command line) that I can set in my GRUB menu so that DMA will be turned off at boot time? I'm booting a mini-itx board with a compact flash disk in an IDE adapter (minimal configuration). I get several errors about DMA timeouts after the 'starting Ubuntu' message at bootup. It takes a very long time to get to the point where init starts up and then the boot seems to progress at a more or less normal speed. thanks for any help!

January 3rd, 2005	#2
twisted_steel Way Too Much Ubuntu Join Date: Oct 2004 Location: Rhode Island, USA Beans: 284 Ubuntu 9.10 Karmic Koala	Re: turn off HD DMA at boot time To disable DMA completely, it looks like the parameter is Code: ide=nodma If you only want to disable DMA on a specific drive, the parameter is Code: hda=nodma where hda is the device.

January 4th, 2005	#3
mrosenlof 5 Cups of Ubuntu Join Date: Dec 2004 Beans: 18	Re: turn off HD DMA at boot time Thank you! The ide=nodma parameter got me past this.

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