Public bug reported:

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)

** Affects: grub2 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug quantal

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https://bugs.launchpad.net/bugs/1051154

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

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