Ubuntu boot options can be easily customized with applications like Super Boot Manager. However, tweaking too much with boot options can cause many issues. Boot Repair is a Linux application which can resolve boot problems, these include:
- Repair the boot when an Operating System does not boot any more after installing Ubuntu
- Repair the boot when access to GRUB and any OS is lost
- Allow to reinstall GRUB boot loader easily
- Allow to restore the original boot sector (MBR) if it has been saved by
Boot-Repair can be installed & used from a normal session or a Live CD or USB. See the below procedure to understand how to use this software, followed by a download link containing packages for Ubuntu & Debian (.Deb Package), Lubuntu, Kubuntu, Xubuntu, Voyager and Hybryde.
To get started, open a Terminal Window and enter the below commands:
sudo add-apt-repository ppa:yannubuntu/boot-repair
sudo apt-get update
sudo apt-get install boot-repair-ubuntu
Once Boot Repair is installed, launch it from Applications Menu.
Select the options which may resolve your boot issues. For example, you may select a default Operating system to boot from (in case of dual or multiple OS booting), manually purge GRUB to fix GRUB problems, or place GRUB into SDA. Click Apply, OK for the selected options to be applied.
A prompt will inform you that boot was successfully repaired. Restart your system for the changes to fully take effect.
Note: It might be wise to backup your system before performing such tasks, so that you may be able to revert the changes in case a wrong option is selected.