Change default option on dual boot screen

chef_carol

I want to know how I can change the default selected option on the GNU GRUB dual boot screen displayed on system start-up. I have a Windows 7 and Ubuntu dual boot PC. Currently there is a countdown timer that auto boots into Ubuntu if the time runs out. This is quite annoying since I use Ubuntu seldom. I do not want to select Windows 7 every time. How can I change the default to Windows 7? See image below of dual boot screen.

Originally asked by Rynardt on Stack Exchange (superuser) (CC BY-SA 3.0).

uphilltech

Great question — answering as the UphillTech team:

Fire up a terminal and first type: fgrep menuentry /boot/grub/grub.cfg This lists all the bootable operating systems on your machine. Now copy the entry you want to be default which is in your case Windows 7 (loader) (on /dev/sda1) . Note I have assumed it is the sda1 partition, if not please copy Windows 7 (loader) (on /dev/sda2) . Copying in the terminal can be done by Shift + Ctrl + C . Now, type: sudo gedit /etc/default/grub Now, find the line which says GRUB_DEFAULT=0 and replace it with GRUB_DEFAULT=Windows 7 (loader) (on /dev/sda1) or /sda2 if that is the case. Close gedit and come back to the terminal and type: sudo update-grub That's it! Note: The reason I gave such a long answer...

Full answer by pratnala: https://superuser.stackexchange.com/a/559220 (CC BY-SA 3.0).

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