HDD doesn't show up !

[boxXx]

ok i bought a new 320 gb WD hard drive for my pc downstairs and i putted it in my pc and shit enabled it in the bios but it just won't show up in my computer :S

its only shows up my old hdd and not the second one (the new one)

what to do ? here is a screen :

[Aeneon]

Install Disc

[boxXx]

allready fixed it yesterday so i close this