Cant Reformat External Hard Drive

[EricPCNoob]

Hello,
I wan to reformat an old External hard drive and when I go into computer, right click it and hit reform it says "You dont have rights to do that" What?
That makes no sense. Im the only user on this computer. WHat should I do to reformat the hard drive?

 

[Ulrica-740]

You could get your answer in another thread:
http://www.tomshardware.com/forum/298416-32-reformat-external-hard-drive