Jason Pyeron wrote:
> Unfortunatly, there is no option to change this. I will search for a new BIOS
> for it, but as the system will be running off a flash drive in production I am
> not in a hurry.
>
you might just see if you can enable DMA with the hdparm command.
first off...
# hdparm -i /dev/hdb
I only have a IDE cdrom handy on on a centos 5 box (my HD's are all
scsi, hardware raid, or fiberchannel), it displays...
# hdparm -i /dev/hda
/dev/hda:
Model=TEAC CD-ROM CD-224E, FwRev=K.9A, SerialNo=
Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=0kB, MaxMultSect=0
(maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: sdma0 sdma1 sdma2 mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 *udma2
AdvancedPM=no
* signifies the current active mode
note the * mode. in my case, its udma2 which is fairly fast (I believe
66MB/sec). a modern hard drive should do udma3 or 4 (100 or 133Mhz).
try...
# hdma -Xudma3 /dev/hdb
.dev/hda:
setting xfermode to 100 (UltraDMA mode3)
use at your own risk.