I just installed a new WD 160gb hard drive. Jumpers set to slave, on the primary IDE channel. My current HD was a Maxtor 80 gb, set to master. The problem is, the transfer mode is stuck in PIO mode (slow as molasses) and will not change over to Ultra DMA no matter what I do. I have tried reinstalling the drive and the IDE channel, to no avail. What is also wierd is that XP recognizes the drive and I can use it and transfer files (very slowly BTW), but my BIOS does not recognize the drive. WTF??