GRUB Boot menu

  1. Hello, can you maybe help me how I can remove unnecessary entries from the GRUB boot menu? There are several Fedora entries and also several Linux Mint entries, but I deleted Mint a long time ago. How can I clean it up?

Likely you still have entries under /boot/efi/EFI (and maybe /boot and/or /boot/loader/entries) that are remenants of mint.

Clean that out then run sudo grub2-mkconfig -o /boot/grub2/grub.cfg and it should then remove the entries for mint from the grub menu.