[Bug 1163086] Re: os-prober created a 11.6 MB grub.cfg file impossible to boot

[SomeOne]

I have the same problem.
System with raid1

Version:
grub-pc:      2.00-13ubuntu3
os-prober    1.57ubuntu1

Workaround: Disabled the invocation of os-prober:

Insert 
  GRUB_DISABLE_OS_PROBER=true

into /etc/default/grub and run grub-update

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Title:
  os-prober created a 11.6 MB grub.cfg file impossible to boot

Status in “os-prober” package in Ubuntu:
  Confirmed

Bug description:
  Also described here:
  http://askubuntu.com/questions/271898/what-is-grub-doing-while-it-takes-9-minutes-to-start-booting-the-kernel
  and here:
  http://lists.gnu.org/archive/html/bug-grub/2013-03/msg00037.html

  Sometime around the start of 2013 grub started to take longer and longer to boot the kernel and kernel updates started taking too long (more than 10 minutes). The 30_os-prober process was seen executing. At one point grub was taking 9 minutes to boot the kernel, which once booted just took 28 seconds to boot. The delay was actualy in grub.
  Later I discovered my  /boot/grub/grub.cfg was 11.6 MB which is bad.
  A big chunk of the menu entries is generated by /etc/grub.d/30_os-prober.

  Line 223: ### BEGIN /etc/grub.d/30_os-prober ###
  ...
  Line 175174: ### END /etc/grub.d/30_os-prober ###

  grub.cfg has 175191 lines, so that script represents 99% of the 11.6
  MB in the file.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: os-prober 1.56ubuntu1
  ProcVersionSignature: Ubuntu 3.5.0-26.42-generic 3.5.7.6
  Uname: Linux 3.5.0-26-generic x86_64
  ApportVersion: 2.6.1-0ubuntu10
  Architecture: amd64
  Date: Tue Apr  2 00:02:50 2013
  InstallationDate: Installed on 2013-03-27 (6 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  MarkForUpload: True
  ProcEnviron:
   LANGUAGE=es_AR:es
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=es_AR.UTF-8
   SHELL=/bin/bash
  SourcePackage: os-prober
  UpgradeStatus: No upgrade log present (probably fresh install)

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