Very good program, specially if you don't know all the commands that you need to type in a terminal in order to partition your disk(s).
I have a secondary hard disk, SATA, where I had installed several Linux distributions; I wanted to erase whatever was in the HD, but when installing the Linux distribution, althought it says that it will reformat that area, in reality it doesn't, so information keeps accumulating in the disk.
With GParted I erased all the partitions and created the partitions in the disk as I wanted and needed.