How to clean the booting options of my laptop since i am seeing windows 8, ubuntu volume 2 and another ubuntu volume 2 (that doesn't exist) since i made a new installation of the OS again? I don't want to remove the both operating systems, what i want is to get rid of the other options of ubuntu on the list (there is nothing in there when you click it says : insert disk or press enter to choose blah blah..)
For a recent version of Ubuntu, you need to edit the grub2 menu files. See the link to "Grub2 Revisited" in the response to question:
The blog posting has a detailed set of instructions.