GNU bug report logs - #31969
[PATCH] bootloader: grub-efi: Identify as "GuixSD" instead of "grub".

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Message #16 received at 31969-done <at> debbugs.gnu.org (full text, mbox):

From: ludo <at> gnu.org (Ludovic Courtès)
To: Marius Bakke <mbakke <at> fastmail.com>
Cc: 31969-done <at> debbugs.gnu.org
Subject: Re: [bug#31969] [PATCH] bootloader: grub-efi: Identify as "GuixSD"
 instead of "grub".
Date: Tue, 26 Jun 2018 22:12:36 +0200

Marius Bakke <mbakke <at> fastmail.com> skribis:

> ludo <at> gnu.org (Ludovic Courtès) writes:
>
>> Marius Bakke <mbakke <at> fastmail.com> skribis:
>>
>>> * gnu/bootloader/grub.scm (install-grub-efi): Pass "--bootloader-id" to grub-install.
>>> ---
>>>  gnu/bootloader/grub.scm | 1 +
>>>  1 file changed, 1 insertion(+)
>>>
>>> diff --git a/gnu/bootloader/grub.scm b/gnu/bootloader/grub.scm
>>> index 8f45995ca..538ddc37a 100644
>>> --- a/gnu/bootloader/grub.scm
>>> +++ b/gnu/bootloader/grub.scm
>>> @@ -403,6 +403,7 @@ submenu \"GNU system, old configurations...\" {~%")
>>>          ;; root partition.
>>>          (setenv "GRUB_ENABLE_CRYPTODISK" "y")
>>>          (unless (zero? (system* grub-install "--boot-directory" install-dir
>>> +                                "--bootloader-id=GuixSD"
>>
>> What does it do?  I can’t even find it in the manual.
>
> UEFI firmwares contain a list of boot entries that looks roughly like
> "foo: uuid,partnum,/path/to/loader".  Try `efibootmgr -v` on an EFI
> system for a more practical example.
>
> If nothing is specified, GRUB will identify as "grub".  With this patch,
> when you look through the possible boot entries in UEFI, there will be
> no doubt which one is GuixSD :-)
>
> However there is one other practical consequence: the GRUB EFI blob will
> now be installed to "/boot/efi/EFI/GuixSD/grubx64.efi".  So current UEFI
> GuixSD users will have a stale "/boot/efi/EFI/grub" folder that is no
> longer needed.

Oh, I see now.  Thanks for explaining!

Ludo’.

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