[Marcos vinicius Andrade]

—-sorry for the incovinience—-

Well, as always, the answer is where it shouldnt be.
I´ve been through this same problem last night and it all endep up beeing a virus in the “File System Information” folder who didnt made possible to premiere see how much space was avaiable.
Run an anti-virus (avast in my particular case)and you should have your problems adressed.
This answer is for all you who have plenty space for a 1 minute DVD and yet premiere show a insuficient space msg.

have a nice day,