Partition issue : only one partition and narrower than disk space

Hi, I have a big issue with OS X El Capitan 10.11.3.

I used to have a Windows partition made with bootcamp that i deleted via bootcamp but it crashed.

I lost all my partitions and even os x. I hence booted in recuperation mode and launched disk utility, i was only able to create an OS X partition of 90Go on my 120Go SSD, and i installed OS X on it. Once installed i tried to maximize the partition size in disk utility to the actual size of the SSD but it wouldn't work. Even worse, it actually showed my OS X partition was 60Go instead of 90... (it also said that change journal was not enabled, i enabled it but nothing happened)

How can i make my OS X partition as large as my SSD ?

Here are some pics of disk utility and hard drive occupied space.