I have 2 harddrive, 1, Western Digital 3GB, 2, Maxtor 10GB. Before I install the Maxtor Harddrive, the WD was the master harddrive for the system. Today, I put the Maxtor into the system, and I made the maxtor to be the Master, and WD to be the Slave. For some reason, the BIOS will detect the WD to be the master and Maxtor to be the Slave. I think I did change the Jumper, I put the jump for the maxtor on the 1st slot from the left, and for the WD I think I put it on the 2nd slot. Does anyone know Why.