Storage Drive Wont Load

[HOTDOGS]

So I had to revamp my system and I can get it to boot into the bootloader menu so I can choose between OSx or Win 7 no problem if I only have both my boot drives connected, but as soon as I connect my storage drive I can't get to the boot menu anymore, instead I get a / or - as a message.

This was never a problem before and I have tried changing the boot priority but it appears that as soon as I connect my storage drive I can't find my OSx boot drive in the HDD list in the boot priority.

What the heck is going on? I need to get this issue resolved ASAP!

 

[HOTDOGS]

The dual boot menu shows up when only both the boot drives are in but as soon as I put in the storage drive I can't boot into the boot menu or force boot into OSX but I can force boot into Windows 7 and read the storage drive. What the heck is going on here?