Some people use Ubuntu in dual boot with Windows and they prefer to make Windows as default Operating System. Prior to Ubuntu 9.10 this was achieved by changing the default line in /boot/grub/menu.lst file.
Ubuntu 9.10 Karmic Koala has Grub2 which does not have menu.lst file. The configuration file is /boot/grub/grub.cfg which is not supposed to be edited even by root. The primary configuration file for changing menu display settings is /etc/default/grub. The procedure to change the default OS is as follows:
Count the line number in the Grub menu taking first line as 0.
$ gksudo gedit /etc/default/grub
Change 0 in this line to the desired number:
GRUB_DEFAULT=0
Save and close the file
$ sudo update-grub
After running update-grub the default will change in grub.cfg
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2 comments:
thanks! great and easy tutorial.
ladi.
Hi
I changed my default OS to Windows using the steps you mentioned. But then, WINXP would not start because the grub corrupted my "device.map" file in /boot/grub :(
I found help on how to reset my device.map and also re-installed my GRUB version using "sudo apt-get install grub2" and added the drive info of WIndows XP in the device.map.
Now, the default Os is changed to WInXP. Thanks for this post :)
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