[Bug 978464] Re: Upgrade 10.04 to 12.04 Beta 2 failed, grub issue

[David Pashley]

After a little bit of experimenting (and lots of rebooting) I tracked
down the problem to a number of syntax errors in the generated grub.cfg.
See attached for the changes that allowed my VM to boot. Obviously the
changes will need to be made to the source files rather than the
grub.cfg, but these should be easy to make from the diff supplied.

(It would be great if grub would output a better error message when it
fails to read its config file correctly)

** Patch added: "Diff to my grub.cfg"
   https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/978464/+attachment/3131674/+files/grub.cfg.diff

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https://bugs.launchpad.net/bugs/978464

Title:
  Upgrade 10.04 to 12.04 Beta 2 failed, grub issue

Status in “grub2” package in Ubuntu:
  Confirmed

Bug description:
  I upgraded a 10.04 to 12.04 Beta 2.

  After the compulsory reboot, I ended up stuck on a GRUB shell.

  GRUB didn't get properly updated

  Screen shot is attached.

  I know how to pass that problem manually by upgrading grub
  configuration by hand using a LiveCD.. But obviously, for your lambda
  users it's going to be a massive blocker.

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