NEC 6750A shows as Slave



I am trying to install a NEC 6750A drive in my Dell B130 Laptop. But, it shows up as a slave drive. I have tried using the “master bootcode flasher” and then using “binflash” to flash a new firmware on the drive. The drive still shows up as slave. Am I doing this correctly? Is there any other way out there to make this drive a master drive? I saw the slodering of pins 45 & 47 method but want to use that as a last resort.
Any help would be greatly appreciated.