Plexwriter 40/12/40a only in pio mode

my plextor 40/12/40a is supposed to work as a udma device but it only get detected at pio mode. Strange this is.

My system:

pentium IV 1800
asus p4s333 mainboard sis645 chipset
plexwriter 40/12/40a latest firmware
aopen 52x cdrom player
os windows xp pro dutch
mem corsair xms 2700 ddr333 256mb

strange thing is when my bios starts it says 2 devices udma

my plextor is secondary master and my aopen cdrom is secondary slave.

when i check in systemmanager hardware at ide controllers it says pio mode.

Please help me out.

Tried wc3 to copy and got me a coaster due to this!

medium error which i searched at forum broughed me to pio and udma modes. checked it and yes pio it is but cannot be changed.

What is causing this problem?

Greetz,

M@RCEL

This dropping of DMA for PIO mode seems to be a common problem due to a bug in WinXP.

The link at 12/10/32A went to PIO all of a sudden describes the problem and the fix. :wink: