Ubuntu
grub2 package

  1. Bug #1097570
  2. Comment #41

Comment 41 for bug 1097570

Revision history for this message
Shih-Yuan Lee (fourdollars) wrote :

GRUB should follow the UEFI's BootCurrent to find the root instead of checking the existence of /.disk/info or /.disk/mini-info.

It looks like the followings. (pseudocode)

    if ! search --disk --set=root UEFI:BootCurrent; then
        if ! search --file --set=root /.disk/info; then
                search --file --set=root /.disk/mini-info
        fi
   fi
   set prefix=($root)/boot/grub

Or you can put UEFI's BootCurrent device or partition in the first order to check when running `search --file --set=root`.

In short, if GRUB never checks UEFI BootCurrent, the issue is impossible to fix.