When I tried to re install Ubuntu 11.10, I wanted to erase the existing Ubuntu using gparted editor/ something else icon in Ubuntu. I found it was not detecting any existing partition. Then when I googled and used gparted editor I found it was showing unallocated space of entire hard disk space. However I am able to boot to Ubuntu normally and when I use disk utilities I am able to access and see all partitions. Please help me to solve my issue