Ubuntu
grub2 package

  1. Bug #1311247
  2. Comment #30

Comment 30 for bug 1311247

Revision history for this message
vagrale (vagrale) wrote : Re: error: malformed file, press any key to continue

I had the same problem.
I found a solution here https://forum.manjaro.org/index.php?topic=10354.msg103451#msg103451
I adding the parameter GRUB_SAVEDEFAULT=true to /etc/default/grub file and that fix the problem.