Adding Caddy SSD L502X - Not detected in BIOS start up

Hey, I purchased a Samsung 840 Evo 250gb to put in a caddy drive. I have installed it and put windows on the SSD, but the SSD is only viewable in My Computer. Bios doesnt show this as a bootable drive (not listed under hard drives). On the main screen of Bios its listed under SATA ODD which means it knows its there. I am unsure of the problem, if I move my other hard drive to the caddy. The same thing happens, I am unsure if I should care and should just install the SSD into the main HDD slot and put a HDD in the caddy, and since it wont have the OS. I can ignore it not being in the bios boot menu. (Just a note, I upgraded the main HDD to a SSHD 1TB 6GB/s). (Edits down below).

I would love anyones help/input! Thanks

My caddy: Silverstone TS09 12.7mm Height 2.5in HDD/SSD SATA Caddy for Laptops at Memory Express
SSD: Samsung 840 EVO Series Solid State Drive, 250GB at Memory Express
HDD: Seagate 1TB Laptop SSHD, SATA III w/ 64MB Cache at Memory Express

EDIT: I am trying to update my bios but the download link on dell for the newest version A12 (Release date 26 Oct 2012) doesn't work. Anyone know where else I can grab it from?

EDIT2: Added modded bios, here's a Screen cap of the HDD Settings

 

You can not boot an OS from the SATA2 Port, which is the slot where the DVD drive or caddy sits.