This is the pastebin result: https://paste.ubuntu.com/15009157/
I also got this message from the report but I don't know how to proceed with this. Can someone please explain this:
The boot files of [The OS now in use - Ubuntu 15.10] are far from the start of the disk. Your BIOS may not detect them. You may want to retry after creating a /boot partition (EXT4, >200MB, start of the disk). This can be performed via tools such as gParted. Then select this partition via the [Separate /boot partition:] option of [Boot Repair]. (https://help.ubuntu.com/community/BootPartition)