[Bug 878003] Re: upgrading from 11.04 to 11.10 failed on grub symbol not found grub_divmode64_full

[uMac]

Hi guys, has anyone got some advice or workaround for this issue?
Thanks

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Title:
  upgrading from 11.04 to 11.10 failed on grub symbol not found
  grub_divmode64_full

Status in “grub2” package in Ubuntu:
  New

Bug description:
  upgrade went ok, after reboot I got to grub rescue which said 
   symbol not found grub_divmode64_full.

  I could not recover by following quides hot to load kernel by insmod linux.mod, not helped grub-install to partition from live CD.
  I just had to revert my HDD by cloning back to state before upgrade.

  Please advice how to upgrade?
  my configuration is 
  HW: Mac book pro 7.1
  Dual Boot with EFI bootloader.
  Grub installed on partition 3 on main HDD together with Linux system.

  I was thinking about reinstalling but my home is on separate encrypted
  partition and don;t know how to do clean installation and restore
  setup with existing home folder.

  Thnaks for advice.

  Stan

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