Fwd: Loading multiboot failed

[Markbiophysicist]

Hi,

I can't understand is why an operative system is installed in UEFI mode and
another in legacy mode. The one that is installed in UEFI mode is Windows,
but Kali cannot be installed in UEFI mode. I can't find the right option. I
have to create another USB to fix this problem. However, a while ago I had
Windows and Debian installed with dual boot without having any installation
problems.

There must be some way to have the bootloader properly installed. At the
moment I boot from the UEFI boot menu. I attach a screenshot where you can
see the startup options that the machine offers me. If I choose P4, it
starts Kali Linux (with installed Grub). If I choose Windows Boot Manager
(P1), it starts Windows 10. If I choose only P1, it starts Kali Linux
(same). The grub has an item for booting from Windows created manually by
me, but this one isn't working.

If I prove to install Kali again to take advantage from os-probe during the
installation process, I get an error. This throws it even though I have
passed the partitioned process without any trouble.

It seems to get installed the multiboot system without errors, surely I
would have to erase all my disks and applying a new format to them again.
And that is not possible by now.

Please, some idea to resolve it.

Thanks for your attention.





---------- Forwarded message ---------
De: Markbiophysicist <markbiophysicist@gmail.com>
Date: jue, 25 ene 2024, 20:04
Subject: Re: Loading multiboot failed
To: Andrei Borzenkov <arvidjaar@gmail.com>


Okay, thanks for your information and help, it means i need to reinstall
Kali in UEFI mode and doing so i will recover the control of my computer
again. :-(.

Thank you very much. Best regards

El jue, 25 ene 2024 a las 19:12, Andrei Borzenkov (<arvidjaar@gmail.com>)
escribió:

> On 25.01.2024 18:57, Markbiophysicist wrote:
> > Hello,
> >
> > Already from the Kali installer itself I have had problems with dual
> boot.
> > The problem is that the other previously installed operating system does
> > not recognize me. (Windows 10).
> >
>
> Do you mean that Windows is not offered in GRUB menu? Because Windows
> most certainly is not expected to recognize Linux.
>
> > I have modified the /etc/default/grub file to enable the following
> > configuration key:
> > GRUB_DISABLE_OS_PROBER="false"
> >
> > I have done some testing by modifying the /etc/grub.d/40-custom file and
> > adding custom entries and then running 'sudo update-grub' and testing the
> > results. None have been successful.
> >
>
> "It does not work" is not very useful. Explain what you did, what were
> the results (what was on the screen, what errors, what happened etc).
>
> > The last attempt gave me the following error:
> > invalid signature
> >
>
> Well, EFI binary does not have standard boot sector signature expected
> by legacy BIOS GRUB.
>
> > Please, I would appreciate it if you could tell me if there is any way to
> > solve it or if there is a configuration error.
> >
> > The output of the bootinfo analysis script is as follows:
> >
> >                   Boot Info Script 0.78      [09 October 2019]
> >
> >
> > ============================= Boot Info Summary:
> > ===============================
> >
> >   => No boot loader is installed in the MBR of /dev/sda.
> >   => Grub2 (v2.00) is installed in the MBR of /dev/sdb and looks at
> sector
> >      3051722792 of the same hard drive for core.img. core.img is at this
> >      location and looks for (,gpt3)/boot/grub. It also embeds following
> >      components:
> >
> >      modules
> >
> >
> ---------------------------------------------------------------------------
> >      fshelp ext2 part_gpt biosdisk
> >
> >
> ---------------------------------------------------------------------------
> >
> > sda1:
> >
> __________________________________________________________________________
> >
> >      File system:       vfat
> >      Boot sector type:  Windows 8/2012: FAT32
> >      Boot sector info:  No errors found in the Boot Parameter Block.
> >      Operating System:
> >      Boot files:        /efi/Boot/bootx64.efi /efi/kali/grubx64.efi
> >                         /efi/Microsoft/Boot/bootmgfw.efi
> >                         /efi/Microsoft/Boot/bootmgr.efi
> >                         /efi/Microsoft/Boot/memtest.efi
> >
> > sda2:
> >
> __________________________________________________________________________
> >
> >      File system:
> >      Boot sector type:  -
> >      Boot sector info:
> >
> > sda3:
> >
> __________________________________________________________________________
> >
> >      File system:       ntfs
> >      Boot sector type:  Windows 8/2012: NTFS
> >      Boot sector info:  No errors found in the Boot Parameter Block.
> >      Operating System:
> >      Boot files:        /Windows/System32/winload.exe
> >
> > sda4:
> >
> __________________________________________________________________________
> >
> >      File system:       ntfs
> >      Boot sector type:  Windows 8/2012: NTFS
> >      Boot sector info:  No errors found in the Boot Parameter Block.
> >      Operating System:
> >      Boot files:
> >
> > sdb1:
> >
> __________________________________________________________________________
> >
> >      File system:       ntfs
> >      Boot sector type:  Windows 8/2012: NTFS
> >      Boot sector info:  No errors found in the Boot Parameter Block.
> >      Operating System:
> >      Boot files:
> >
> > sdb2:
> >
> __________________________________________________________________________
> >
> >      File system:       swap
> >      Boot sector type:  -
> >      Boot sector info:
> >
> > sdb3:
> >
> __________________________________________________________________________
> >
> >      File system:       ext4
> >      Boot sector type:  -
> >      Boot sector info:
> >      Operating System:  Kali GNU/Linux Rolling
> >      Boot files:        /boot/grub/grub.cfg /etc/fstab
> >                         /boot/grub/i386-pc/core.img
> >
> > sdb4:
> >
> __________________________________________________________________________
> >
> >      File system:       ntfs
> >      Boot sector type:  Unknown
> >      Boot sector info:  No errors found in the Boot Parameter Block.
> >      Operating System:
> >      Boot files:
> >
>
> Apparently Windows is installed for UEFI boot and Linux is installed for
> legacy boot. os-prober will only check for the matching Windows
> installation - if Linux is booted in legacy mode, it will not look for
> Windows in UEFI mode.
> ...
>
> >
> > menuentry "Windows 10" {
> > set root='(hd1,1)'
> > insmod part_gpt
> > insmod fat
> > insmod chain
> > chainloader /EFI/Microsoft/Boot/bootmgr.efi
> > }
>
> You cannot chainload EFI binary when booted in legacy BIOS mode.
>

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