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I have a laptop with Ubuntu 16.04 dual booted with Windows 10 (UEFI system).

Is it safe for the Ubuntu bootloader to upgrade Windows (to the April creators update) ?

I have already both Windows and Ubuntu installed, so this is not a duplicate of how to install Ubuntu alongside Windows in UEFI. I am just asking whether upgrading Windows may corrupt the grub or the Ubuntu installation

marked as duplicate by karel, Eric Carvalho, George Udosen, waltinator, MadMike Apr 30 '18 at 18:30

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • Upgrades can always fail windows, Ubuntu, or otherwise so in that sense no upgrade is 'safe" back up first. – Panther Apr 29 '18 at 5:10
  • I have back up of data. I want to know if upgrading windows may break the Ubuntu installation – Archisman Panigrahi Apr 29 '18 at 5:18
  • windows doesnt touch your other partitions, but the bootloader is overwritten in the update process, to save that, use a live usb stick, and open a terminal for reinstalling grub with the command sudo grub-install /dev/sda reboot and it will be as always – Egon Stetmann. Apr 29 '18 at 5:37

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