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How can I change default Operating System in start up boot menu?

asked 2012-06-16 10:44:25 +0000

sabi gravatar image

updated 2012-06-16 10:47:25 +0000

How can I change default Operating System in start up boot menu? It is Fedora 17 now and I want to set it on Win 7.

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you should read this -> http://ask.fedoraproject.org/question/526/dual-boot-fedora-16-windows

hhlp ( 2012-06-16 16:28:41 +0000 )edit

5 Answers

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answered 2012-06-18 14:36:07 +0000

Akshay gravatar image

updated 2012-06-18 14:37:07 +0000

In a terminal type:

grep menuentry /boot/grub2/grub.cfg

This will display all your grub entries

Highlight the entry you want to default to - for example Windows 7 (loader) (on /dev/sda1) Right click and choose copy


gedit /etc/default/grub

Change the entry



GRUB_DEFAULT="Windows 7 (loader) (on /dev/sda1)"

i.e. paste the entry you want (including the quotes)

Save, then type

grub2-mkconfig -o /boot/grub2/grub.cfg
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it worked for me, thanks!

robg ( 2012-10-31 11:10:40 +0000 )edit

its saying "cant connect to the session bus" on executing 2nd command!....so wat shud i do now?!

anonymous ( 2012-12-27 12:54:27 +0000 )edit

it dsnt give the option of saving but 'save as'....so pls help me! and also wt i get is "grub_default=saved" and not "=0"

anonymous ( 2013-01-12 13:54:22 +0000 )edit

@anonymous 1 - you can save it by opening in gedit for this type "su -" then root password and then type "gedit /etc/default/grub" it will open grub file in gedit so now you can edit and save it.

2- you have to change the value of grub_default from saved to 0

Rahul Bhadana ( 2013-02-06 13:28:02 +0000 )edit

'gedit' isn't really the ideal command to be editing files as root, even if you can disable the dbus interface. Try a simple editor like nano, which has on-screen instructions.

wquine ( 2013-08-07 01:38:01 +0000 )edit

answered 2012-12-28 22:26:09 +0000

Seems like you are trying to run gedit as root. For gedit to work this way, use "gedit -s /etc/default/grub"

This disables the dbus check so it can be used as root.

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This would be better presented as a comment below the question as it answers - you could make it more clear for other users by moving it there.

randomuser ( 2012-12-29 03:05:50 +0000 )edit

answered 2013-08-07 01:19:16 +0000

First Move to SuperUser


Then search the grub menu entries of your grub

grep menuentry /boot/grub2/grub.cfg

Now edit the grub config by an editor

vi /etc/default/grub

Change the timeout and the GRUB_DEFAULT=0 to GRUB_DEFAULT="Windows 7 (loader) (on /dev/sda1)" The "Windows 7 (loader) (on /dev/sda1)" thing is for Windows 7. You can find your text from the grep menuentry /boot/grub2/grub.cfg

Now save and close form text editor and type the command

grub2-mkconfig -o /boot/grub2/grub.cfg

You are all Done!!

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Other than the timeout, how does this differ from the existing answer? Why change the timeout, anyway?

randomuser ( 2013-08-07 02:20:08 +0000 )edit

answered 2013-03-01 03:50:11 +0000

Ajay gravatar image

when i try to save by command grub2-mkconfig -o /boot/grub2/grub.cfg.....i am getting no such file found.

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answered 2013-11-05 06:20:06 +0000

xcomb gravatar image

updated 2013-11-05 06:28:34 +0000

Unfortunatly it did not work for me, after i've gone through the process of setting windows 7 to a default, after doing these commands, my fedora crashed and i couln't login onto desktop anymore :(. I get sendmain starting, hangs there and that's it, no splash sreen shows up, nothing! Any one can tell, if there is another way to fix the boot order, like a graphical interface? Thanks!

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Asked: 2012-06-16 10:44:25 +0000

Seen: 53,770 times

Last updated: Nov 05 '13