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Ultra DMA66 under Linux

Does anyone know if there is a kernel patch available that enables DMA66 from a hard drive under Linux.   I know the latest stable kernel only supports Ultra DMA33.
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cliffhanger121599
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cliffhanger121599
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Ted22Commented:
There are some patches available, but you must get one for your controler. Find out what controler you have. If a patch is available, download it. Then get the latest kernel from http://www.kernel.org/. You need a good, unmodified kernel to patch. RH kernel is not.

The best place to find out how to do this is http://linuxdoc.org/.

I have an abit motherboard with a highpoint ata66 and it is working for me.

If you have partition magic 4.0 or newer and keep /boot and / separate you can load on ata33, patch and compile. Copy / to ata66, add it to lilo and it will boot. That's what I did. Then lilo from / on ata66 and delete / on ata33.

Or you can plug the drive into ata33, patch, and then plug into ata66.
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cliffhanger121599Author Commented:
Thanks, can you point me in the direction of the patch sites, i know of the /pub/linux/people/kernel/hendrick site, but there are obviously others?   When you talk of a controller, is that offboard, i.e.a plug in card?   I have an onboard AMD Irongate controller which could be a problem.
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Ted22Commented:
http://download.sourceforge.net/pub/linux/kernel/people/hedrick/

This patch is newer than the one I have.
I gave you bad info because this is the only patch for linux I know of,try it.
I was thinking windows2000, which believe it or not has an ata66 problem that must be patched.Be sure you have kernel 2.2.14. The odd numbers are not stable. If you patch and it won't work, I have ide.2.2.14.20000124.patch. I can email it to you.
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cliffhanger121599Author Commented:
many thanks
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