Boot loader on Ubuntu

How to change the boot sequence if you have multi-OS on your PC?

1. Open Synaptic Package Manager
2. Search kgrubeditor, kg is enough. You will see kgrubeditor in your search result.
3. Install it, then you can modify the default OS.

Or

1. Open your terminal
2. Type $ sudo apt-get install kgrubeditor

Or

1. Open your terminal
2. Type $ sudo gedit /boot/grub/menu.list

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