Re: GRUB EFI installation breakage

[Efraim Flashner]

On Tue, Aug 22, 2017 at 03:34:54PM +0200, Ludovic Courtès wrote:
> Hello,
> 
> To reconfigure my system on UEFI, I had to apply this patch:
> 

> modified   gnu/bootloader/grub.scm
> @@ -401,7 +401,8 @@ submenu \"GNU system, old configurations...\" {~%")
>          ;; root partition.
>          (setenv "GRUB_ENABLE_CRYPTODISK" "y")
>          (unless (zero? (system* grub-install "--boot-directory" install-dir
> -                                "--efi-directory" efi-dir))
> +                                ;; "--efi-directory" efi-dir
> +                                ))
>            (error "failed to install GRUB (EFI)")))))
>  

> 
> Before that ‘grub-install’ would fail because ‘efi-dir’ would actually
> be “/dev/sda”, which is what I have in the ‘device’ field of
> ‘grub-configuration’.
> 
> Removing the “--efi-directory” solves the problem because ‘grub-install’
> automatically determines that the EFI directory is mounted at /boot/efi.
> 
> I think 2941b347b664a3d3114de0ac95e28db78db66144 is bogus because it
> assumes that the second argument of the gexp’d lambda is ‘efi-dir’,
> where in fact it is the ‘device’ field of the bootloader config.
> 
> So what is the preferred fix?  Simply remove “--efi-directory” like I
> did above, and rename ‘efi-dir’ to ‘device’ to avoid the ambiguity?
> Thoughts?
> 
> Ludo’.

I spent part of today staring at grub
https://www.gnu.org/software/grub/manual/html_node/Installing-GRUB-using-grub_002dinstall.html#Installing-GRUB-using-grub_002dinstall
if efi-directory is /boot/efi then there's no need for the flag.

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