Followed the tutorial to create a bootable usb drive from ubuntu 18.04 iso - it doesn't boot. Tried several other ways/utilities, still getting:
Failed to open \EFI\BOOT\NULL - Not Found Failed to load image \EFI\BOOT\NULL: Not Found start_image() returned Not Found 1 Answer
Obtained from this Korean blog:
Inside the USB drive go to \EFI\BOOT\, copy grubx64.efi and rename the copy to NULL (not NULL.efi but simply NULL)
It worked for me.
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