Change Default Boot Options

After full installation, Ubuntu is set to be the default operating system to boot up if no key is pressed within a few seconds on a multi-boot system. You might want to set your preferred operating system to boot up by default. This can be done easily with StartUp-Manager.

1. Go to Applications (or Main Menu) > Accessories > Terminal.


2. Enter sudo apt-get install startupmanager (OR copy the highlighted code and, in the Terminal, press Ctrl-Shift-V to paste it).


3. Enter password used upon installation of Ubuntu.


4. Go to System > Administration > StartUp-Manager


5. Enter the same password to perform pre-configuration tasks, which include searching bootloaders to operating systems.


6. Select the default operating system from the pull-down menu, click "Close" to perform post-configuration tasks.

With StartUp-Manager, you can also do others such as manage Usplash themes, adjust bootloader menu resolution or set timeout in seconds. Avoid changing timeout to 0 seconds if you need to select a system to boot up from a multi-boot menu.