> Can you actually verify that this is the case with the _Ubuntu_ shim + _Ubuntu_ GRUB build? As I said, it's not our job to support downstream builds. The shim+GRUB+Windows all have to be 64-bit for this to work of course.
I will use the ubuntu-24.04-desktop-amd64.iso system image to attempt loading Windows 10's /efi/Microsoft/Boot/bootmgfw.efi. I'll get back to you with the results later. I can confirm that shim, grub, and Windows are all 64-bit. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2078307 Title: Grub 2.12 is unable to boot the Windows system using the chainloader /efi/Microsoft/Boot/bootmgfw.efi. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/2078307/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs