[mythtv-users] Re: DMA not enabled

[Kirk Bocek]

The last thing I read about SATA drives said that DMA is always enabled. 
   On the few Linux boxes I've built with SATA drives, it hasn't been an 
issue.

Having said that, hdparm is actually for IDE drives only. On all the 
boxes I've built, the SATA drives show up using SCSI nomenclature 
(/dev/sda, etc.) Although you can query and test /dev/sdx drives with 
hdparm, you're not supposed to be able to set parameters.

Does your motherboard have some sort of IDE emulation for the SATA 
drives? You might try turning that off and going with a native SATA 
interface. If your OS is installed on the SATA drive, this will involve 
using a rescue disk as the drive designation will change.

Hope this helps.

Kirk Bocek

Phil Strong wrote:
> SATA and DMA not working how can I resolve this guys?
> 
> On 10/11/05, *Phil Strong* <phil.strong.sds at gmail.com 
> <mailto:phil.strong.sds at gmail.com> > wrote:
> 
>     I recently replaced my mythbox with a shiny new machine that now has
>     SATA drives.  After initial install of OS and Myth ... I play live
>     tv and it is slow and/or skips.  I checked the hdparm for /dev/hda5
>     (/video) and find out that DMA is disabled :).
> 
>     How do I go about enabling DMA?
> 
>     If the answer is reinstall how do I insure this won't happen again?
> 
>     -- 
>     Phil Strong
>     Synergetic Data Systems
>     (w) 240 793 6565
>     pstrong at synergetic.us <mailto:pstrong at synergetic.us> 
> 
> 
> 
> 
> -- 
> Phil Strong
> Synergetic Data Systems
> (w) 240 793 6565
> pstrong at synergetic.us <mailto:pstrong at synergetic.us>
> 
> 
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