GRUB, also known as the GRand Unified Bootloader, is a modular, portable bootloader that supports a number of platforms. Grub 2.00 was released on Jun 28, see the release note. This tutorial will explain how to upgrade to grub 2.00(tested on Ubuntu 12.04).

NOTE: Grub 2.00 has not been tested by Ubuntu, any problem may cause your systems un-bootable. Do it as your own risk!

  • 1. Open terminal from the dash home, or press Ctrl+Alt+T.
  • 2. execute this command to build dependencies:
    sudo apt-get build-dep grub2
  • 3. Download grub 2.00 and extract it:
    wget -O- | tar -xJ
  • 4. navigate to grub-2.00/:
    cd grub-2.00
  • 5. build with following three commands:
    ./configure --prefix=/usr
    sudo make install

    First command said that I need bison and flex, install them via:

    sudo apt-get install bison flex
  • 6. Install new grub to where the old is. Be careful if you don’t know about it. I only have one hard disk /dev/sda and Ubuntu installed on /dev/sda6, here I installed the new grub to load all systems on the disk:
    sudo grub-install /dev/sda
  • 7. Finally generate the boot entries:
    sudo update-grub