[Bug 1311247] Re: error: malformed file, press any key to continue

[vagrale]

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.

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https://bugs.launchpad.net/bugs/1311247

Title:
  error: malformed file, press any key to continue

Status in “grub2” package in Ubuntu:
  Confirmed

Bug description:
  I have just upgraded from 12.04 to 14.04

  Since the upgrade, when I boot up, the process stops and the normal
  grub screen is replaced after a short while by a message saying

  "error: malformed file, press any key to continue"

  Pressing a key allows booting to continue.

  Someone else who experienced this found that the problem went away
  after having re-installed grub.  I tried this but this did not resolve
  the problem for me.

  synaptic reports the grub package as 2.02~beta2-9

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