[Bug 1263129] Re: prefix is not set correctly in grub2

[Jason Yen]

** Changed in: oem-priority
     Assignee: (unassigned) => Ara Pulido (apulido)

** Changed in: oem-priority
   Importance: Undecided => High

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Title:
  prefix is not set correctly in grub2

Status in GRand Unified Bootloader:
  New
Status in OEM Priority Project:
  New
Status in “grub2” package in Ubuntu:
  New

Bug description:
  This bug report based on lp:1097570 .

  An $prefix was introduced to fix grub2-signed can not find the right
  device when there are two filesystems containing the file
  '.disk/info'.

  But after dig, I had an recovery partition(hd0,1) which had
  '.disk/info', and when start the daily-live image or 13.10 image from
  DVD we found the prefix is '(hd0,1)/boot/grub' , so it means the
  prefix was set by 'search' command or the $prefix is zero or do not
  exist.

  grub> cat (memdisk)/grub.cfg

  if [ -z "$prefix" -o ! -e "$prefix" ]; then
          if ! search --file --set=root /.disk/info; then
                  search --file --set=root /.disk/mini-info
          fi
          set prefix=($root)/boot/grub
  fi
  if [ -e $prefix/$platform/grub.cfg ]; then
          source $prefix/$platform/grub.cfg
  else
          source $prefix/grub.cfg
  fi

  And it's a little hard for me to debug it, if any idea which I can
  help to locate the reason, feel free let me know.

  Thanks a lot!

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