I bought a new hard drive(250GB|WD 7200RPM 8MB WD2500JB) to add to my previous harddrive(40GB|SAMSUNG 7200RPM SP0411N) and when i hook up the new HD it lists it but it doesnt list the extra hard drive space. Someone said it was the master/slave thing and i went to go switch the pin and 1 has 10 pins and the other has 8 so i am confused on if these harddrives will work together. Someone please help