Ever since I installed XP on this computer it recognizes my hard drives as UMA3 ... but whn I boot the computer the BIOS says both are UDMA4. Even Everest reports that they are UDMA4 but set to mode UDMA3... I'll post the report below along with the type of mobo. Field Value ATA Device Properties Model ID FUJITSU MPF3102AT Serial Number 05511973 Revision 0031 Parameters 19857 cylinders, 16 heads, 63 sectors per track, 512 bytes per sector LBA Sectors 20015856 Buffer 512 KB Multiple Sectors 16 ECC Bytes 4 Max. PIO Transfer Mode PIO 4 Max. UDMA Transfer Mode UDMA 4 (ATA-66) Active UDMA Transfer Mode UDMA 3 Unformatted Capacity 9773 MB ATA Device Features SMART Supported Security Mode Supported Power Management Supported Advanced Power Management Supported Write Cache Supported Host Protected Area Supported Power-Up In Standby Not Supported Automatic Acoustic Management Not Supported 48-bit LBA Not Supported Device Configuration Overlay Not Supported ATA Device Physical Info Manufacturer Fujitsu Hard Disk Family XV10 Form Factor 3.5" Formatted Capacity 10.24 GB Disks 1 Recording Surfaces 2 Physical Dimensions 146.0 x 101.6 x 26.1 mm Max. Weight 600 g Average Rotational Latency 5.56 ms Rotational Speed 5400 RPM Max. Internal Data Rate 302.4 Mbit/s Average Seek 9.5 ms Track-To-Track Seek 1.2 ms Full Seek 18 ms Interface Ultra-ATA/66 Buffer-to-Host Data Rate 66.6 MB/s Buffer Size 512 KB Spin-Up Time 8 sec ATA Device Manufacturer Company Name Fujitsu Computer Products of America, Inc. Product Information http://www.fcpa.fujitsu.com/product... --------------------------- Field Value ATA Device Properties Model ID QUANTUM FIREBALLlct20 20 Serial Number 052114450684 Revision APL.0900 Parameters 39560 cylinders, 16 heads, 63 sectors per track, 512 bytes per sector LBA Sectors 39876480 Buffer 418 KB (Dual Ported, Read Ahead) Multiple Sectors 8 ECC Bytes 4 Max. PIO Transfer Mode PIO 4 Max. UDMA Transfer Mode UDMA 5 (ATA-100) Active UDMA Transfer Mode UDMA 3 Unformatted Capacity 19471 MB ATA Device Features SMART Supported Security Mode Supported Power Management Supported Advanced Power Management Not Supported Write Cache Supported Host Protected Area Supported Power-Up In Standby Not Supported Automatic Acoustic Management Supported 48-bit LBA Not Supported Device Configuration Overlay Not Supported ATA Device Physical Info Manufacturer Quantum Hard Disk Family Fireball lct20 Family Code Name Phantom Form Factor 3.5" Formatted Capacity 20416 million bytes Disks 1 Recording Surfaces 2 Physical Dimensions 146.1 x 101.6 x 25.4 mm Max. Weight 500 g Average Rotational Latency 6.67 ms Rotational Speed 4500 RPM Max. Internal Data Rate 248 Mbit/s Average Seek 12 ms Track-To-Track Seek 2 ms Full Seek 24 ms Interface Ultra-ATA/100 Buffer-to-Host Data Rate 100 MB/s Buffer Size 128 KB Spin-Up Time 8 sec ATA Device Manufacturer Company Name Maxtor Corporation Product Information http://www.maxtor.com/en/products/ --------------------- Field Value Motherboard Properties Motherboard ID 07/27/2000-693A/596B-W97-2A6LGQ1FC-00 Motherboard Name QDI Advance 9 Front Side Bus Properties Bus Type Intel GTL+ Bus Width 64-bit Real Clock 100 MHz Effective Clock 100 MHz Bandwidth 800 MB/s Memory Bus Properties Bus Type SDR SDRAM Bus Width 64-bit Real Clock 100 MHz Effective Clock 100 MHz Bandwidth 800 MB/s Chipset Bus Properties Bus Type PCI Bus Width 32-bit Real Clock 33 MHz Effective Clock 33 MHz Bandwidth 133 MB/s Motherboard Physical Info CPU Sockets/Slots 1 Expansion Slots 2 ISA, 5 PCI, 1 AGP RAM Slots 3 DIMM Form Factor ATX Motherboard Size 190 mm x 300 mm Motherboard Chipset ApolloPro133 Extra Features SpeedEasy Motherboard Manufacturer Company Name QDI Business Unit of Legend Holdings Limited Product Information http://www.qdigrp.com/qdisite/eng/P... BIOS Download http://www.qdigrp.com/qdisite/eng/s... So there you have it... is there any way to fix this?? I have uninstalled and reinstalled the Master IDE drivers and tried the VIA 4 in 1... and still no avial. As you can tell it says Max. UDMA Transfer Mode UDMA 4 (ATA-66) but says Active UDMA Transfer Mode UDMA 3

Have you installed the latest Motherboard Chipset Drivers as well as Service Pack 2 and subsequent Microsoft Updates ?

No I have not updated to SP2 because what I am using was a beta release of XP. As for the mobo drivers, yup all updated.

Hmm a Beta release of XP? That might explain it :)

Are you using an 80-wire IDE cable? If you're using a 40-wire cable, the best you can do is ATA33.

Ok to answer these questions, first Alex ... there is nothing wrong with the Windows version I have because it has no problems detecting UDMA5 and setting them to UDMA5 on my wifes Pentium 4. And as for Jam ... ATA33=UDMA2 which is max you can go up to on a 40-wire cable and I already mentioned it's on UDMA3=ATA44 .... so yes I am using an 80 wire cable. Anyone else have any ideas?