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- ftp://ftp.gnu.org/gnu/grub/grub-2.00.tar.xz | tar -xJ

• 4. navigate to grub-2.00/:

  cd grub-2.00

• 5. build with following three commands:

  ./configure --prefix=/usr
  make
  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