[Bug 355359] Re: grub2 file not found error

[rosencreuz]

I have this problem after upgrading from 12.04 to 12.10 (quantal quetzal). 
I don't have dual boot, never had. Only Ubuntu.
Upgrade process didn't raise any errors nor any questions about grub. Restart after upgrade resulted with grub rescue.
I upgraded to released version, not to beta.
"insmod normal" says file not found.

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https://bugs.launchpad.net/bugs/355359

Title:
  grub2 file not found error

Status in “grub2” package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: grub2

  Link to topic on a forum I've opened 
  http://ubuntuforums.org/showthread.php?t=1115512

  I desinstalled grub and installed grub 2 with grub-pc package and it
  worked until I launched upgrade-from-grub-legacy. Now when I reboot my
  pc it say file not found ?

  Here is my grub.cfg, fdisk list and blkid list. It's the default file
  generated when installing grub2.

  I've tried also this solution but it doesn't work. here the link: 
  http://ubuntuforums.org/archive/inde...t-1037538.html

  I've tried after to launch update-grub no result.

  I've tried to start grub2 as console holding down the C keyboard or
  press C multiple time but it doesn't work. 2-3 seconds after boot it
  shows me

  Welcome to Grub text in black and backgroud in white e
  Error: file not found
  Entering rescue mode...
  grub rescue>

  and when I type help it shows me only this command.
   
  boot
  cat
  chainloader
  dump
  exit
  help
  insmod
  ls
  lsmod
  rmmod
  root
  set
  unset

  Thanks for help

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