Interesting Grub issue [Solved]

[Rabin Yasharzadehe]

Not sure where I found this, and I have this in my efi/grub file,
but you can chain the EFI grub.cfg to the one you're generating (just make
sure to change the uuid for the disk)

```
#/boot/efi/EFI/fedora/grub.cfg
search --no-floppy --fs-uuid --set=dev 38b0586f-2715-4493-a548-e12902f1b68d
set prefix=($dev)/grub2
export $prefix
configfile $prefix/grub.cfg
```

--
Rabin


On Thu, 2 Mar 2023 at 17:36, Aharon Schkolnik <aschkolnik at gmail.com> wrote:

> So, it turns out that I have two directories (each on their own mount
> point):
> /boot
> /boot/efi
>
> The attached grub.cfg was from /boot/efi -missing the windows entry
> The correct grub.cfg was in /boot - including the missing windows entry
>
> That makes sense since I ran grub2-mkconfig -o /etc/grub2-efi.cfg, and
> /etc/grub2-efi.cfg is linked to /boot/grub2/grub.cfg
>
> So, the file in /etc is linked to the file in /boot but the boot process
> uses the file in /boot/efi (/boot/efi/EFI/fedora)
>
>
> I would think that on a efi system, the file in /etc should be linked to
> the file in /boot/efi
>
> Sound like a bug?
>
> Any idea how I ended up with bot /boot and /boot/efi
>
> Any reason not to change the link?
>
> Any reason not to delete /boot/grub2 and leave /boot/efi?
>
> On Wed, 1 Mar 2023 at 21:27, Aharon Schkolnik <aschkolnik at gmail.com>
> wrote:
>
>> Hi.
>>
>> I have both Fedora and Windows 10 installed on my computer.
>> I can boot either using bios settings.
>> I have grub installed, and can boot to it.
>> The grub menu shows me 3 linux kernels and UEFI firmware.
>> It does not show me Windows.
>> In the attached grub.cfg file there is the following entry:
>>
>> ### BEGIN /etc/grub.d/30_os-prober ###
>> menuentry 'Windows Boot Manager (on /dev/sdc3)' --class windows --class
>> os $menuentry_id_option 'osprober-efi-3C10-1AFF' {
>>         insmod part_gpt
>>         insmod fat
>>         set root='hd2,gpt3'
>>         if [ x$feature_platform_search_hint = xy ]; then
>>           search --no-floppy --fs-uuid --set=root --hint-bios=hd2,gpt3
>> --hint-efi=hd2,gpt3 --hint-baremetal=ahci2,gpt3  3C10-1AFF
>>         else
>>           search --no-floppy --fs-uuid --set=root 3C10-1AFF
>>         fi
>>         chainloader /efi/Microsoft/Boot/bootmgfw.efi
>> }
>>
>> The entry is there, but it doesn't show when the machine boots/
>>
>> Any ideas?
>>
>> _______________________________________________
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