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what is the proper way to recover grub in an EFI environment ?



Dear all,

I am on a system which used to dual-boot between Debian GNU/Linux and
MS-Windows.  I have shared couple of screenshots to show the structure
of how Debian/GNU linux looks within MS-Windows. For some reason, I'm
unable to get grub screen and only get the MS-Windows bootloader.

The install I had done was in legacy mode when I had Debian installed
and subsequently had changed the boot mode from legacy to EFI (on
suggestion from a debian DD and it worked for quite sometime.) Now
though the situation is such, I am unable to boot into Debian using
MS-bootloader. Now while there are a few methods [1, 2, 3] by which I
could arguably get into Linux, I am looking to see what would be the
recommended way. A search on the Debian wiki didn't give any help
except [4] and I'm not sure that would be a good way.

FWIW, I did look into /boot via DiskInternals Linux reader and found
that /boot/efi/ is empty while /boot/grub/x86_64-efi/grub.efi is
present.

1. https://www.supergrubdisk.org/super-grub2-disk/
2. https://itsfoss.com/no-grub-windows-linux/
3. https://wiki.debian.org/GrubEFIReinstall
4. https://wiki.debian.org/BootLoader

Would somebody tell/share what would be the recommended method in the
above scenario of all the tools.

-- 
          Regards,
          Shirish Agarwal  शिरीष अग्रवाल
  My quotes in this email licensed under CC 3.0
http://creativecommons.org/licenses/by-nc/3.0/
http://flossexperiences.wordpress.com

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Attachment: partition-manager-windows-10.png
Description: PNG image

Attachment: disk-internals-debian-linux.png
Description: PNG image


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