Re: DMA not works in Linux 2.6.12, but in Windows works fine.

Ivan G wrote:

Problem descrition:

DMA not works in Linux 2.6.12, but in Windows works fine.

DMA not works with HDD and CD drives connected by 80-conductor
cable to secondary IDE port (ide1).


This is expected behavior.

This is a limitation of "combined mode". Turn off combined mode(sometimes called 'legacy' mode) in your BIOS, if your BIOS lets you.


	Jeff



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References:
- DMA not works in Linux 2.6.12, but in Windows works fine.
  - From: "Ivan G" <[email protected]>

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