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This question already has an answer here:

I recently installed ubuntu (dual boot with windows).

I want to boot windows automatically unless I manually choose ubuntu.

I use grub and startupmanager (yes I know obsolete). I am running ubuntu 14.04 and windows 7.

Can someone tell the procedure to do this?

marked as duplicate by Rinzwind, jobin, Seth Jun 16 '14 at 20:52

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  • Press Ctrl+Alt+T, type gksudo gedit /etc/default/grub press Enter and enter your password.

  • You will see the following contents:

    GRUB_DEFAULT=0
    GRUB_HIDDEN_TIMEOUT=0
    GRUB_HIDDEN_TIMEOUT_QUIET=true
    GRUB_TIMEOUT=10
    GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
    GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
    GRUB_CMDLINE_LINUX=""
    
  • You can change the default from 0 to any number, corresponding to the entry in the Grub bootup menu (first entry is 0, second is 1, etc.)

  • Then run sudo update-grub

Important: To get grub file in /etc/default/grub if not exist, run this command:

sudo apt-get install grub2 grub-pc

Then run

sudo update-grub
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Use a program called grub-customizer to modify your grub files - this will allow you to select the windows installation as the default boot.

Loading instructions are located at this Ubuntu site

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