Dma
 

I activated dma on /dev/hdc to speed up my dvd playback on xine. The commands I used was hdparm -d1 /dev/hdc but whenever I restart the comp it switches back to it being deactivated. What option do I add to fstab to activated it on startup.

add that same line to your rc.local file.
and also add:
options hdc-cd dma=1
to your /etc/modules.conf file

thanks

did it work alright?

Ya it worked I was wondering though if I should activate dma for my hard drive too?

I would you will see a big difference in proformance if you do

I changed I/O from 16-bit to 32-bit, and enabled DMA, and only saw a change from 47.06 MB/sec to 47.41 MB/sec, and I don't even know if these times are good or not. I would like to hear what someone has to say about this.

Just do hdparm -I /dev/whatever and you'll see what is enabled.There is a * beside the mode that is currently running - like *udma5 or whatever is on.
I only get 30 MB/sec out of my drive.