Hard Disk Partition

There was a problem in my system. Windows also was not able to re install. I deleted all the partition from the hard drive. When i was re partitioning the hard disk i went through enable large amount support. But while making partition available space show only 10gb/ 80gb. I am not able to get this space even after formating the partition. Many times i am getting this problem. I dont know where i am doing the wrong.