[Bug 1311302] Re: GRUB2 asks for password when booting

[winnie]

Behaviour in grub2 changed. To allow booting without superuser's
password one has to add "--unrestricted" to boot entry.

The problem was also discussed here in more detail: 
https://bugzilla.redhat.com/show_bug.cgi?id=840204

Additionally here's an official guide about that:
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/System_Administrators_Guide/sec-GRUB_2_Password_Protection.html

** Bug watch added: Red Hat Bugzilla #840204
   https://bugzilla.redhat.com/show_bug.cgi?id=840204

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https://bugs.launchpad.net/bugs/1311302

Title:
  GRUB2 asks for password when booting

Status in grub2 package in Ubuntu:
  Triaged

Bug description:
  Following this guide:
  https://help.ubuntu.com/community/Grub2/Passwords you can set a
  superuser to prevent anyone from editing grub lines, but allowing them
  to boot anyway. Back in Ubuntu 12.04, you just edit
  /etc/grub/40_custom with:

  set superusers="John"
  password John foo
  export superusers

  then you execute sudo update-grub2 and that's it. You can't edit grub
  entries without the password but you can boot.

  Now in Ubuntu 14.04, GRUB will ask for the password even when you just
  want to boot.

  A workaround is editing /etc/grub.d/10_linux with:

  CLASS="--class gnu-linux --class gnu --class os --unrestricted"

  The "--unsrestricted" option does the trick. But the "way to go"
  should be adding a line in /etc/default/grub so the grub-mkconfig will
  auto-edit the 10_linux file.

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