i bought a 3TB WD green on yesterday and when i tried to setup windows 7 in partition section i saw a error which doesn't allow me to make a new partition with my 746GB unallocated hard drive so i left that behind in that time and i start installing windows on other drive however how can i fix this problem and use this part of my hard drive which is unallocated and it's near 800GB
PLEASE help ME
You could use a program called EaseUS Partition Master to extend your windows 7 partition to the unallocated space on that drive. It's free for desktop OSs. Just be careful as you could loose all your data on the drive. I would make sure you have a good backup before you proceed just in case there is a problem and you have to reload everything.