I read a few people having problems when trying to install multiple drives not being recognized, system hanging etc.. I had the same problem.
Well today I said let me try something. Attached the drive the went into the BIOS & guess what, the New drive was pushed to 1st boot order?!
Changed that to the correct boot drive & Success drive installed & ready to use!!
So for everyone experiencing this problem check your BIOS after installing a new drive & make sure the Boot order is set correctly.