How do I turn on DMA for ide-scsi DVD drives

Konstantin Svist fry.kun at gmail.com
Thu Jan 31 03:47:40 UTC 2008


spmirowski wrote:
> Hello,
>
> Back when Fedora handled disc drives as ide, I would use hdparm to 
> turn on DMA.  Now that Fedora 8 seems to run them as SCSI devices, 
> hdparm can't tell them to turn on DMA.  Any ideas how to get them 
> blazing fast again?
>
> Thanks,
>
> Stephen
>


They should already be running at max speed, if they're using the new 
driver.
Please check the speed (not the hdparm reported setting) before 
attempting to optimize.





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