I am trying to install Ubuntu alongside a pre-installed windows 10. After installation, I can only boot to windows. I have tried running boot-repair, and however the computer still directly boots to windows. This is the output of boot-repair and boot info summary: http://paste.ubuntu.com/p/h2c5fy5wmx/

There is no grub menu and I am not able to find Ubuntu boot option in BIOS to change the priority order either.

I already disabled secure boot and using UEFI.

  • didyou disabled secure boot? have you tried the boot order keys? are you using bios or uefi? – Egon Stetmann. Apr 25 '18 at 2:54
  • Yes. I disabled secure boot. Using UEFI. What is boot order keys? – user1753524 Apr 25 '18 at 2:59
  • What brand/model system? I see mention of Sony. Can you directly boot ubuntu entry in UEFI boot menu? Most Sonys have needed work arounds. Boot-Repair should automatically do copy file with 'use standard EFI file': askubuntu.com/questions/150174/… Sony, HP & others workarounds: askubuntu.com/questions/486752/… – oldfred Apr 25 '18 at 3:38

I fix this problem by copy the /EFI/ubuntu/shim64.efi to repalce /EFI/Microsoft/Boot/bootmgfw.efi and /EFI/Boot/bootx64.efi.

And enabled secure boot.

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