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

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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

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

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upgrading from 11.04 to 11.10 failed on grub symbol not found grub_divmode64_full
https://bugs.launchpad.net/bugs/878003
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