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I would like to know if there is a way to configure GRUB so that it will auto boot into Windows if there is no user input after a while.

This is to smooth out the process of Windows update. As many of us know, Windows updates will reboot many times during the update. and since GRUB is the default boot manager, it will not boot into Windows unless we manually choose Windows.

In the case of a windows update, we will have to sit through the whole thing and choose Windows every time the computer restarts. Not to mention windows 10 auto updates (unless you turned it off in group policy or by setting the wifi to a metered connection), so we might wake up one day, choose Windows on the grub screen, just to find out a few seconds later that we will have to sit and wait a couple of hours at the computer choosing Windows every time it restarts.

I haven't dual booted the ubuntu 16.04 distribution of linux in fear of the above happening. If there is a way to configure GRUB to auto boot into windows if there is no user input after a while, since I need to make sure that every thing fits together nicely before dual booting ubuntu.

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1 Answer 1

Reset to default
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This is the way to change the boot order in grub config.

You have to be root or a user with sudo permission.

First of all backup the old config with

cp /etc/default/grub /etc/default/grub.bak

then edit /etc/default/grub with your favourite editor (gedit, vim, nano,etc).

Find the line that says: GRUB_DEFAULT=0

Change the GRUB_DEFAULT Value to the number that you want to select by default (counted from zero), save the file an run.

update-grub

The new configuration is built. Reboot to test.

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  • so, when the timer counts down to 0 and i haven't chosen an OS, GRUB will auto boot into the OS that has the value of 5 (if i edit GRUB_DEFAULT=5). But how will i know which number is Windows? Will it just which line Windows is on in the GRUB menu. If possible, is there a video link for this?
    – MassiveFire
    May 27, 2016 at 15:04
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    @MassiveFire It follows the order of the lines as they appear in the grub menu starting from 0.
    – jcbermu
    May 30, 2016 at 7:40
  • @MassiveFire If you are afraid of doing a manual change on a text file you can use a graphic tool called GRUB Customizer, check this
    – jcbermu
    May 30, 2016 at 7:46

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