Re: tried to install F30 and F31 on 2 separate Partition on 1 external disk

[Steven Usdansky]

Each distro creates its own directory under /boot/efi/EFI, so I have /boot/efi/EFI/fedora, /boot/efi/EFI/manjaro. /boot/efi/EFI/ubuntu.
And in each distro's directory, there's a set of the distro's own grub files, including grub.cfg, that will bring up a normal grub menu let me boot any of my installations. Selecting an individual distro's /boot/efi/EFI has to be done in the boot setup screen or the 'System setup' entry in Fedora's grub menu