I am trying to regain permissions to my drive after denying them accidently. I am using Window 7. But when I right click the disk and go to properties, the security tab is missing. Why is this, that is how I was able to change it in the first place. I am the only user and administrator on this computer. I even tried to make another user and give it administration abilities, no luck. I also tried the Takeown command prompt and it still says access denied. I am clueless. I feel that there has to be a way to gain access to it or I am going to have to reformat it. But wouldn't that erase my drive data. Please Help. My drive is an NTFS format.