Ok, when I last built my PC 10 years ago, HDD were not this complicated.
Currently: New system, Windows7 64bit installed on my Samsung EVO 840 1TB. Managed to get my WD 1TB and 2TB data drives formatted as GPT, and now they are unallocated, BUT WON'T SHOW UP AS DRIVES IN WINDOWS!? What have I missed? Any suggestions plz.