The correct dma modes are usually set by default either way
my hitachi eide laptop drive was missing -m16 -u1 -c3 although I didn't see any performance increase, at least I know I have it set up correctly now
both my optorite cd/dvd drives on my laptop/pc were missing -c3
I have added these settings to my /etc/rc.local (ubuntu/debian)
hdparm can't acces my SATA drive but I would guess it is optimally configured by default
It also might be worth settings -A1 (enable drive lookahead feature) and -W1 (enable write caching feature) on the HDD
Edited by Z3r0, 02 May 2006 - 13:23.