how to set HD's DMA to UDMA5 ??

hgkrt

my hda's info..

hdparm -i /dev/hda

Model=IC35L040AVVA07-0, FwRev=VA2OA52A, SerialNo=VNC202A2GW816A
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=52
BuffType=DualPortCache, BuffSize=1863kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=80418240
IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes:  pio0 pio1 pio2 pio3 pio4
DMA modes:  mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 *udma2 udma3 udma4 udma5
AdvancedPM=yes: disabled (255) WriteCache=enabled
Drive conforms to: ATA/ATAPI-5 T13 1321D revision 1:  2 3 4 5

* mark is on udma2, i saw others are on udma5,

how can i set it to udma 5 ???

thank you...

hillhzg

先用：
haparm -d 1 /dev/hda
测试速度有没有提升，考个文件就好了...
不行的话就用：
haparm -X69 /dev/hda
先要看你的硬盘和主板支持不支持...