I just closed this thread as outside of the Support and Help guidelines and supported systems mentioned as per @tea-for-one post.
Linux Mint provide their own support options, or you can use a generic Linux support site too.
When you go to a site appropriate for your chosen OS, don’t forget to provide specifics as to what you’re running; kernel detail you provided tells me/us little about the system’s actual boot; as that is usually set by the last system installed in a dualboot environment, with dualboot disabled by default with GRUB code used by upstream & many OSes (Ubuntu carries patches that allow an easier dualboot if detected at install time, many OSes do not though). Not all systems use GRUB either.