Re: How to restore grub in UEFI mode

You are welcome =D.

2016-01-05 18:44 GMT-04:00 real bas <[email protected]>:

> Hi again,
> I fix it after several hours, I followed what Rodolfo say about boot
> options (I noticed that liveCD or liveInst of debian doesn't do UEFI boot,
> only legacy boot) and use this answer [1] to complement (very explain)
> using ubuntu CD (with UEFI boot).
>
> [1] http://superuser.com/a/376471
>
>
> I hope it helps other users, thanks Rodolfo.
>
>
>
> 2016-01-05 16:49 GMT-03:00 real bas <[email protected]>:
>
>> I following this links but gets error to install grub like as my
>> partition doesn't look like a EFI
>>
>> 2016-01-05 19:44 GMT+00:00 Rodolfo <[email protected]>:
>>
>>> Well, than is diferent to me, I used only this steps that i told to you
>>> and it works.
>>>
>>> Look these two links:
>>>
>>> https://wiki.debian.org/GrubEFIReinstall
>>>
>>> and
>>>
>>>
>>> https://www.thomas-krenn.com/en/wiki/Restore_Ubuntu_UEFI_Boot_Entries_after_BIOS_Update
>>>
>>> Maybe help you.
>>>
>>> 2016-01-05 15:40 GMT-04:00 real bas <[email protected]>:
>>>
>>>> I try mount my partition /dev/sda9 in /boot/efi but say /boot/efi
>>>> doesn't exist (no have efi directory in boot then I create it and mounted
>>>> in /boot/efi)
>>>> then I reinstalled grub-efi and try grub-install /dev/sda but say:
>>>> error: /boot/efi doesn't look like an EFI partition
>>>>
>>>> 2016-01-05 19:34 GMT+00:00 Rodolfo <[email protected]>:
>>>>
>>>>> When i recovered my grup-efi, and i remember that i reinstalled it
>>>>> with apt-get, and automatically do the right configurations.
>>>>>
>>>>> Do not use grub-install, reinstall the package and leave the
>>>>> configurations to it.
>>>>>
>>>>> 2016-01-05 15:31 GMT-04:00 real bas <[email protected]>:
>>>>>
>>>>>> I leave it UEFI and only disable secure boot, when I use this command:
>>>>>>    [ -d /sys/firmware/efi ] && echo EFI || echo LEGACY
>>>>>>    return EFI normally
>>>>>>
>>>>>> but when I use grub-install:
>>>>>> grub-install --root-directory=/mnt /dev/sda
>>>>>> say: grub-install: error: cannot find EFI directory
>>>>>>
>>>>>> 2016-01-05 19:00 GMT+00:00 Rodolfo <[email protected]>:
>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> -change boot option to legacy mode and disable secure boot
>>>>>>> consequently
>>>>>>>
>>>>>>> I think in this part you do not need to turn to legacy, leave it
>>>>>>> UEFI, only disable secure boot.
>>>>>>>
>>>>>>> Debian Jessie has support for UEFI boot.
>>>>>>>
>>>>>>> Try reinstall grub using the normal installation cd, in it has an
>>>>>>> option to recover or access shell in your installed system.
>>>>>>>
>>>>>>> 2016-01-05 14:35 GMT-04:00 real bas <[email protected]>:
>>>>>>>
>>>>>>>> Hi, I recently upgrade my debian (UEFI) and grub is gone.. I try to
>>>>>>>> recovery grub but failed or I`m doing something wrong.
>>>>>>>> This steps I following are:
>>>>>>>> -create usb with live cd
>>>>>>>> -change boot option to legacy mode and disable secure boot
>>>>>>>> consequently
>>>>>>>> -boot from live cd (Here, when I boot from CD and check if i`m
>>>>>>>> using EFI or legacy, always say legacy, maybe be here the problem)
>>>>>>>> -mount my partition / in /mnt
>>>>>>>> -install grub in /mnt
>>>>>>>>
>>>>>>>> when install grub i receive the following message:
>>>>>>>>
>>>>>>>>> Installing for i386-pc platform.
>>>>>>>>> grub-install: warning: this GPT partition label contains no BIOS
>>>>>>>>> Boot Partition; embedding won't be possible.
>>>>>>>>> grub-install: warning: Embedding is not possible.  GRUB can only
>>>>>>>>> be installed in this setup by using blocklists.  However, blocklists are
>>>>>>>>> UNRELIABLE and their use is discouraged..
>>>>>>>>> grub-install: error: will not proceed with blocklists.
>>>>>>>>>
>>>>>>>>
>>>>>>>> Can someone help me?
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>