Arch Linux

SmartAce

Member

Registered: 2024-03-12

Posts: 3

Error loading \EFI\Microsoft\Boot\bootmgfw.efi : Unsupported

Hello,

As I managed to install Windows 10 dual booting with Arch yesterday, I made several updates, installations and others on Windows 10 OS during one day.

The computer restarted many times without any problem but today, after no one update, when I tried to boot Windows 10 it blocks me and I get the message bellow :

Error loading \EFI\Microsoft\Boot\bootmgfw.efi : Unsupported

I didn't find any support about this message on the web so I came here to ask for your help.

What I tried so far :
pacman -Syu (didn't work)
update-grub (didn't work)

Thanks in advance.

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,230

Re: Error loading \EFI\Microsoft\Boot\bootmgfw.efi : Unsupported

Assuming it's a GRUB compat issue you'd have to actually reinstall grub (... and where do you have update-grub from, that's a debian bastardization of grub-mkconfig which isn't shipped in any  Arch package, but would be from the AUR and somewhat pointless -- are you on Arch in the first place?)

Have you checked whether you can still boot the entry present in your firmwares own bootloader?

SmartAce

Member

Registered: 2024-03-12

Posts: 3

Re: Error loading \EFI\Microsoft\Boot\bootmgfw.efi : Unsupported

Thank you V1del for your answer.

First of all I am new on arch linux, I am a kinda newbie even thought I always be passionnate by learning IT so I have some soft basis.
Yes as you said I got it from a yay command. Is that a problem ? Maybe I have to delete if it isn't compatible with Arch ?

Yes of course I have 4 entries :
Arch linux LTS (working, I am actually writing to you from the Arch OS)
Arch linux LTS-fallback (never tried)
Windows 10 (not working : message "Error loading \EFI\Microsoft\Boot\bootmgfw.efi : Unsupported")
Firware bootloader (that is actually booting in bios)

I would like to emphasize the fact it was working perfectly during 1 day and that I didn t touch anything in the BIOS or Arch side. I just installed some software on Windows side.

Waiting your answer,

Last edited by SmartAce (2024-03-13 07:08:52)

SmartAce

Member

Registered: 2024-03-12

Posts: 3

Re: Error loading \EFI\Microsoft\Boot\bootmgfw.efi : Unsupported

For your information I reinstalled Windows and erased Arch as they were no many files both systems.

Thanks anyway for your help.