On Mon, 31 Oct 2022 17:17:35 -0400
Robert McBroom via users wrote:
~]# grub2-install /dev/sdc
grub2-install: error: this utility cannot be used for EFI platforms
because it does not support UEFI Secure Boot.
An efi install of grub2 needs more info than just a disk drive. Here
is my note from building a bootable USB stick:
grub2-install --target x86_64-efi --removable --boot-directory=/mnt/boot \
--efi-directory=/mnt
(perhaps --removable isn't appropriate in your case).