GRUB2 Reverting to GRUB Legacy(from ubuntu docs)

  1. Open a terminal: Applications, Accessories, Terminal.
  2. Optional: Make backup copies of the main GRUB 2 directories and files.
    • sudo cp /etc/default/grub /etc/default/grub.old

    • sudo cp -R /etc/grub.d /etc/grub.d.old

    • sudo cp -R /boot/grub /boot/grub.old

  3. Remove GRUB 2
    • sudo apt-get purge grub-pc

    •  The system will be unbootable until another bootloader is installed.

    • Once the packages are removed, many files will still remain in '/boot/grub'
  4. Install GRUB 0.97
    • sudo apt-get install grub

  5. With grub installed, the user must still create the menu.lst and stage1/stage2 files by running the following two commands.

    1. sudo grub-install /dev/sdX

      • Choose the correct device (sda, sdb, etc), normally the one on which Ubuntu is installed.
      • Creates the stage1 and stage2 files in /boot/grub and writes to the MBR.

    2. sudo update-grub

      • Generates menu.lst

      • Tab to "Yes" when prompted.
  6. Reboot

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