# -----------------------------------
# Optimisation disque dur 1
hdparm -c 1 /dev/hda > /dev/null
echo "Optimisation disque dur 1 : 32 bit"
hdparm -c 1 /dev/hdb > /dev/null
echo "Optimisation disque dur 2 : 32 bit"

-d     Disable/enable the "using_dma" flag for this  drive.   This  option
              now works with most combinations of drives and PCI interfaces which
              support DMA and which are known to the IDE driver.  It  is  also  a
              good  idea to use the appropriate -X option in combination with -d1
              to ensure that the drive itself is programmed for the  correct  DMA
              mode,  although  most  BIOSs  should  do this for you at boot time.
              Using DMA nearly always gives the best performance, with  fast  I/O
              throughput and low CPU usage.  But there are at least a few config-
              urations of chipsets and drives for which DMA does not make much of
              a  difference,  or  may  even slow things down (on really messed up
              hardware!).  Your mileage may vary.