Can't enable DMA when using IDE devices on SATA controllers

[Marcelo Magno T. Sales]

Hi, Mikkel

Em Quarta 31 Maio 2006 15:59, Mikkel L. Ellertson escreveu:
> Hdparm can NOT control DMA setting for SATA drives. What I have done
> is to add "hdc=noprobe" to the Grub boot line for the kernel. hdc is
> then treated as a SCSI device, and it uses the BIOS DMA settings.
> Hdparm will still say that DMA is not turned on for the drive, but
> DMA will be used. (It also says that DMA is off for /dev/sda.)
>
Thanks. This seems to have solved the problem for the hard drives, but I have 
yet to find out if there's something more that must be done for the DVD 
drives, which are still too slow.

[]'s
Marcelo