How do I set up Ubuntu to boot by default in dual boot?

Question

I dual booted my laptop by installing Ubuntu 14.04 along with Windows 8.1. Now when I power on my laptop by default it boots with Windows. How can I set Ubuntu to boot by default?

do you see any boot option screen? – Raghav Mittal Jul 16 '15 at 07:40 — Raghav Mittal, Jul 16 '15 at 07:40

score 2 · Answer 1 · edited Mar 17 '18 at 04:43

2

You need to edit the file /etc/default/grub.

gksu gedit /etc/default/grub

The default entry is determined by the GRUB_DEFAULT= setting in this file. The first menuentry has a value of 0. If Ubuntu is the second entry in the boot screen then set GRUB_DEFAULT=1.

Afterwards you need to run this command:

sudo update-grub

For further information see this article on help.ubuntu.com

edited Mar 17 '18 at 04:43

Zanna

70,465

answered Jul 16 '15 at 07:28

Andree Wille

289

it is showing that you don't have permission to edit this file. – Sahil Kumar Jul 17 '15 at 08:50
does sudo vim /etc/default/grub or sudo nano /etc/default/grub work? – Andree Wille Jul 17 '15 at 09:51
No its not working. :( – Sahil Kumar Jul 17 '15 at 13:29
Do you get any error message? – Andree Wille Jul 17 '15 at 13:35
When i start my laptop and go to boot menu then i choose Ubuntu to boot.. Then 4 options come.... ... This method changes option in these four menus. – Sahil Kumar Jul 17 '15 at 14:40

score 0 · Answer 2 · answered Jul 16 '15 at 07:39

0

make sure that fast start mode in Windows is disabled. It happened with me. Disable it and shutdown and start your machine again.

google about disabling this mode for more info

answered Jul 16 '15 at 07:39

Raghav Mittal

1,586

How do I set up Ubuntu to boot by default in dual boot?

2 Answers2