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SubjectRe: SATA Conflict with PATA DMA
Esben Stien wrote:
> I'm having problems enabling DMA for my PATA HD.
>
> hdparm -d1 /dev/hdb reports:
> HDIO_SET_DMA failed: Operation not permitted
>
> Of course, I'm super user. Nothing is printed in dmesg.
>
> I'm on linux-2.6.16 and motherboard is Fujitsu Siemens D1561 with an
> ICH5. I also have a SATA hd in the computer and this only happens when
> the SATA hd is there. If I remove the SATA HD, then I can enable DMA
> for the PATA hd.

Disabled combined mode in BIOS.

Jeff



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