Bootinfoscript does not show the grub file, but does show the folder.
Code:
sda2: ______________________________________________
File system: vfat
Boot sector type: Windows 8/2012: FAT32
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files: /EFI/Boot/bootx64.efi /EFI/elementary/MokManager.efi
/EFI/elementary/grubx64.efi
/EFI/elementary/shimx64.efi
/EFI/Microsoft/Boot/bootmgfw.efi
/EFI/Microsoft/Boot/bootmgr.efi
/EFI/Microsoft/Boot/memtest.efi
If using Windows it may not mount the efi partition. Better to use live installer and from Nautilus file browser look for it. If it is really missing that may be the problem.