Im a noob also so I dont know how much I can help.
I have the same HDD as my media HDD and I am about to buy another.
If I am reading correctly you are using this as a master HDD, so this may not help you, I installed on a IDE drive and My SATA WD500 wouldnt mount, I had to go into System settings and set a mount point in the Media folder for the SATA Drive and Enable it with Admin Privileges. Now it works for me (After I setup the NTFS Drives for Read Write). So Im a noob but I know how to mess around a bit.
I doubt this will help but I tried