I have just reformatted my os. I have now installed another hdd but it is not showing my computer

My Computer
- OS
- windows 7 premium 64 bit M/B
- CPU
- intel i5
- Motherboard
- Gigabyte Z68-ud3h-b3
- Memory
- corsair 16
- Graphics Card(s)
- Asus 6950
- Monitor(s) Displays
- Benq 24"
- Screen Resolution
- full Hd
- Hard Drives
- samsung 2 off 1@2t 1@1t
- PSU
- corsair 650
- Case
- cosmos coolermaster
- Cooling
- fans
- Keyboard
- logitech usb
- Mouse
- logitech lazer
