What about the pins on the HD itself? Are the set for Master or Slave?

>Hi all.
>
>Recently my HD is not booting as master, i can't even see it on CMOS/BIOS, when i plug it on my other PC it works just fine as slave, i checked with other IDE cables and the same problem.
>
>Is it that my HD is damaged somehow and won't boot as master anymore?
>I didn't do anything unussual like changing settings on BIOS, just went to turn it on and i found with this.
>
>Any ideas??
>
>Thanks in advance.
>
>Jim.