Eraser Volumio from SD card

I wrote volumio to several SD cards and now I am trying to reclaim the space on one of them. I run linux and tried gparted and kpartitioner but both of them won’t work and give the error of overlapping volumes. I tried to dd 1s and 0s to the whole disk and right at the end it failed due to a similar error. How do I erase volumio from an SD card?!?