First of all, I must say that I have successfully used Disk Utility in the past and thus I could rename my partitions.
But yesterday, I saw that my partitions are not mounted, so I used Storage Device Manager to make them to automatically mount at start up. That was a success also but I saw that the partitions are labelled as sda1 and sda7 not as they were initially. So I wonted to open again Disk Utility to rename them.
The problem is that, no matter how many times I try to open the application it just does't start at all! I don't know why it is doing this, as I have already told, I could use it in the past very well. I don't know if this "lack of reaction" of the application is the result of the actions I described before, or it is something else.
But I'm thinking of trying to start Disk Utility in terminal. Maybe I'll force it to run and solve the labelling problem. Do you have any ideas?