I have a westren digital Hard drive with size 3 GB ( P.N:- WD30EZRX ) The windows detect Just 746 GB from Capacity a try to align Drive but did not work then i try to adjust and configure the Jumper and did not work if any body have any idea to make my windows ( XP pro 32 Bit ) to Detect all Capacity .
Check if your motherboard supports 3TB HDDs or if it has any BIOS updates to make it compatible, if its not compatible you might need to get a HDD controller card so you can use it.