[Bug 1051154] Re: [quantal] warning: your embedding area is unusually small. core.img won't fit in it.

[Colin Watson]

@Laurie (#2), could you please file your bug separately?  It looks
distinct from Nick's problem: in your case, it appears that your disk is
being detected as https://en.wikipedia.org/wiki/Logical_Disk_Manager
(presumably incorrectly since you don't mention Windows).  It would be
helpful to extract the first megabyte or so and the last megabyte or so
of your disk using dd, and attach that to the bug report.

** Changed in: grub2 (Ubuntu)
       Status: Confirmed => Triaged

** Changed in: grub2 (Ubuntu)
   Importance: Undecided => High

** Summary changed:

- [quantal] warning: your embedding area is unusually small. core.img won't fit in it.
+ lvm+mdraid1x core image too large for minimal MBR

** Summary changed:

- lvm+mdraid1x core image too large for minimal MBR
+ mdraid1x core image too large for minimal MBR

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Title:
  mdraid1x core image too large for minimal MBR

Status in “grub2” package in Ubuntu:
  Triaged

Bug description:
  I've been running Quantal on a machine for a while now, and everything
  has been smooth.

  However, I just took the recent grub2 & kernel updates which seemed to break grub2:
  * grub-pc-bin:amd64 (1.99-22ubuntu2, 2.00-4ubuntu1)
  * linux-image-3.5.0-14-generic:amd64 (3.5.0-14.16, 3.5.0-14.19)

  Grub2 now complains:

  /usr/sbin/grub-bios-setup: warning: your embedding area is unusually small.  core.img won't fit in it..
  /usr/sbin/grub-bios-setup: error: embedding is not possible, but this is required for RAID and LVM install.
  /usr/sbin/grub-bios-setup: warning: your embedding area is unusually small.  core.img won't fit in it..
  /usr/sbin/grub-bios-setup: error: embedding is not possible, but this is required for RAID and LVM install.

  
  Are there any workarounds for this?

  
  This is a very simple install, just md RAID1, with one dumb partition, no LVM.

  $ sudo parted /dev/sda
  GNU Parted 2.3
  Using /dev/sda
  Welcome to GNU Parted! Type 'help' to view a list of commands.
  (parted) print                                                            
  Model: ATA HDS725050KLA360 (scsi)
  Disk /dev/sda: 500GB
  Sector size (logical/physical): 512B/512B
  Partition Table: msdos

  Number  Start   End    Size   Type     File system  Flags
   1      32.3kB  500GB  500GB  primary  ext4         raid


  $ sudo parted /dev/sdb
  GNU Parted 2.3
  Using /dev/sdb
  Welcome to GNU Parted! Type 'help' to view a list of commands.
  (parted) print                                                            
  Model: ATA HDS725050KLA360 (scsi)
  Disk /dev/sdb: 500GB
  Sector size (logical/physical): 512B/512B
  Partition Table: msdos

  Number  Start   End    Size   Type     File system  Flags
   1      32.3kB  500GB  500GB  primary  ext4         boot, raid


  $ uname -ar
  Linux machine-1 3.5.0-14-generic #16-Ubuntu SMP Mon Sep 10 21:57:14 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: grub2 (not installed)
  ProcVersionSignature: Ubuntu 3.5.0-14.16-generic 3.5.3
  Uname: Linux 3.5.0-14-generic x86_64
  ApportVersion: 2.5.1-0ubuntu7
  Architecture: amd64
  Date: Fri Sep 14 23:38:19 2012
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub2
  UpgradeStatus: Upgraded to quantal on 2012-03-05 (194 days ago)

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