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Re: Debian boot entry won't generated after flash BIOS.

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  Re: Debian boot entry won't generated after flash BIOS. Cyril Brulebois <kibi@debian.org> - 2021-10-07 11:10 +0200
    Re: 回覆: Debian boot entry won't generated after flash BIOS. Daniel Lange <DLange@debian.org> - 2021-10-07 11:50 +0200
      回覆: 回覆: Debian boot entry won't generated after flash BIOS. Alvin Huang <Alvin_Huang@phoenix.com> - 2021-10-07 12:40 +0200
      Re: 回覆: Debian boot entry won't generated after flash BIOS. Steve McIntyre <93sam@debian.org> - 2021-10-07 16:50 +0200
    回覆: Debian boot entry won't generated after flash BIOS. Alvin Huang <Alvin_Huang@phoenix.com> - 2021-10-07 11:50 +0200

#240999 — Re: Debian boot entry won't generated after flash BIOS.

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Hi,

Alvin Huang <Alvin_Huang@phoenix.com> (2021-10-07):
> I've the questions need your help. We found the boot entry will
> disappeared after BIOS flash and it cause we can't boot into Debian
> system by itself, we need boot into Debian through the UEFI Shell boot
> file.
> Does the boot entry won't generated in BIOS boot priority automatic
> after BIOS flash? If yes,  do we have any method to generate boot
> entry from Debian?

I assume your UEFI firmware lost the entries that were stored there for
UEFI booting. You can use a Debian Installer image, selecting Rescue
mode at the boot prompt, answer a few questions, then proceed to
restoring the bootloader. This should do the trick.

Please direct further questions to debian-user@ (in copy).


Cheers,
-- 
Cyril Brulebois (kibi@debian.org)            <https://debamax.com/>
D-I release manager -- Release team member -- Freelance Consultant

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#241000 — Re: 回覆: Debian boot entry won't generated after flash BIOS.

Hi Alvin,

thank you very much for reaching out to Debian with this issue.

Am 07.10.21 um 11:18 schrieb Alvin Huang:
> Beside the generate boot entry by manual. Does Debian will generate the 
> boot entry automatic when the original boot entry disappeared? Because 
> I’m confused the problem is cause by BIOS or Debian.

Kibi (Cyril Brulebois) mentioned
https://wiki.debian.org/UEFI#Force_grub-efi_installation_to_the_removable_media_path
during a discussion on IRC we had about your mail.

I assume this wiki page details the issue you are seeing.
Windows installs a fallback EFI executable and Debian doesn't.
The rationale is that every OS would overwrite each others
"removable" EFI executable.
Best would be if your BIOS was preserving boot entries across upgrades
(BIOS flashing).

Please do not hesitate to reach out if we can help you test things.

Kind regards,
Daniel

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#241003 — 回覆: 回覆: Debian boot entry won't generated after flash BIOS.

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Hi Daniel,

Thanks for your explanation. I’ll try to generate by manual and if I have any further question I’ll let you know.
Have a nice day!

BR,
Tel : 886-2-7745 5793
Alvin Huang

寄件者: Daniel Lange [mailto:DLange@debian.org]
寄件日期: Thursday, October 7, 2021 5:45 PM
收件者: Alvin Huang
副本: debian-project@lists.debian.org; May Tseng; Jasmine Kang; debian-user@lists.debian.org; Steve McIntyre
主旨: Re: 回覆: Debian boot entry won't generated after flash BIOS.

Hi Alvin,

thank you very much for reaching out to Debian with this issue.

Am 07.10.21 um 11:18 schrieb Alvin Huang:
> Beside the generate boot entry by manual. Does Debian will generate the
> boot entry automatic when the original boot entry disappeared? Because
> I’m confused the problem is cause by BIOS or Debian.

Kibi (Cyril Brulebois) mentioned
https://wiki.debian.org/UEFI#Force_grub-efi_installation_to_the_removable_media_path<https://wiki.debian.org/UEFI#Force_grub-efi_installation_to_the_removable_media_path>
during a discussion on IRC we had about your mail.

I assume this wiki page details the issue you are seeing.
Windows installs a fallback EFI executable and Debian doesn't.
The rationale is that every OS would overwrite each others
"removable" EFI executable.
Best would be if your BIOS was preserving boot entries across upgrades
(BIOS flashing).

Please do not hesitate to reach out if we can help you test things.

Kind regards,
Daniel

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#241010 — Re: 回覆: Debian boot entry won't generated after flash BIOS.

Hi all!

On Thu, Oct 07, 2021 at 11:44:43AM +0200, Daniel Lange wrote:
>Hi Alvin,
>
>thank you very much for reaching out to Debian with this issue.
>
>Am 07.10.21 um 11:18 schrieb Alvin Huang:
>> Beside the generate boot entry by manual. Does Debian will generate theboot
>> entry automatic when the original boot entry disappeared? BecauseI’m
>> confused the problem is cause by BIOS or Debian.
>
>Kibi (Cyril Brulebois) mentioned
>https://wiki.debian.org/UEFI#Force_grub-efi_installation_to_the_removable_media_path
>during a discussion on IRC we had about your mail.
>
>I assume this wiki page details the issue you are seeing.
>Windows installs a fallback EFI executable and Debian doesn't.
>The rationale is that every OS would overwrite each others
>"removable" EFI executable.

Correct, that's exactly the logic we followed there.

>Best would be if your BIOS was preserving boot entries across upgrades
>(BIOS flashing).

Absolutely.

-- 
Steve McIntyre, Cambridge, UK.                                steve@einval.com
“Changing random stuff until your program works is bad coding
 practice, but if you do it fast enough it’s Machine Learning.”
   -- https://twitter.com/manisha72617183

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#241001 — 回覆: Debian boot entry won't generated after flash BIOS.

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Hi,

Thanks for your reply.
Beside the generate boot entry by manual. Does Debian will generate the boot entry automatic when the original boot entry disappeared? Because I’m confused the problem is cause by BIOS or Debian.

BR,
Tel : 886-2-7745 5793
Alvin Huang

寄件者: Cyril Brulebois [mailto:kibi@debian.org]
寄件日期: Thursday, October 7, 2021 4:51 PM
收件者: Alvin Huang
副本: debian-project@lists.debian.org; May Tseng; Jasmine Kang; debian-user@lists.debian.org
主旨: Re: Debian boot entry won't generated after flash BIOS.

Hi,

Alvin Huang <Alvin_Huang@phoenix.com> (2021-10-07):
> I've the questions need your help. We found the boot entry will
> disappeared after BIOS flash and it cause we can't boot into Debian
> system by itself, we need boot into Debian through the UEFI Shell boot
> file.
> Does the boot entry won't generated in BIOS boot priority automatic
> after BIOS flash? If yes, do we have any method to generate boot
> entry from Debian?

I assume your UEFI firmware lost the entries that were stored there for
UEFI booting. You can use a Debian Installer image, selecting Rescue
mode at the boot prompt, answer a few questions, then proceed to
restoring the bootloader. This should do the trick.

Please direct further questions to debian-user@ (in copy).


Cheers,
--
Cyril Brulebois (kibi@debian.org) <https://debamax.com/<https://debamax.com>>
D-I release manager -- Release team member -- Freelance Consultant

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