Running fedora alongside mint on a seperate HDD

Hello, I just downloaded fedora 31 and installed it via a bootable usb, at the end of my installation i cant seem to boot into fedora only linux mint, so i want to try again.

please give me a step by step walkthrough to install fedora alongside mint but on a seperate HDD

Hi. Try this from Mint’s console:

#      it may be under /boot/grub2/, alternatively.
sudo grub2-mkconfig -o /boot/grub/grub.cfg

Each OS updates its GRUB’s configuration after the every Kernel update,
and scans the available disks for the other Operating Systems installations.