It was totaly wrong. I expand /-partition from 20GB to 37GB just for that reason that / was full and suddenly the partion shows near 35GB. I I booted up another time with 12.04LTS 32-bit and made a litte change in Gparted and now it work again Now will I see if my computer are able to run 12.04. I get a bad sceen as I have shown in another post