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I'm running a Windows 10/ubuntu dual boot system and have successfully used grub as boot manager until today. However, today the system unexpectedly failed to display grub at startup and instead booted to windows right away. I verified in UEFI that linux has higher boot priority, yet the problem persists. I also created a ubuntu live boot medium and ran bootrepair withit, albeit without success. The pastebin can be found here:

http://paste.ubuntu.com/p/t4SxpDWPGp/

I admit not being able to interpret this log in full. Any pointers as to where the underlying problem may lie are appreciated.

Additional info: I tried both with activated and deactivated secureboot, without any effect.

bpaassen
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1 Answers1

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The solution was a combination of multiple things:

  1. the boot-repair did work in that it successfully reinstalled grub.
  2. however, it was also necessary to set the newly installed grub version as trusted in UEFI, as pointed out by oldfred above (thank you very much!); refer to Bootable device not found after clean install of Ubuntu 14.04 UEFI on Acer for more details
  3. further, I needed to set the boot order such that the trusted grub was in front of windows in UEFI

Thank you again, oldfred!

bpaassen
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