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I have a dual-boot Windows 10 and Ubuntu HP Laptop.

After upgrading to Ubuntu 16.04 I had a lot of little issues and decided to do a clean install. This coincided with wanting to upgrade to 10 and so I followed this guide - How can I dual-boot Windows 10 and Ubuntu on a UEFI HP notebook?

To be honest, that's the best guide I've ever seen and it worked with no issues. I used efibootmgr to get my boot order correct and it's been working great.

The problem I have is that I wanted to try and get Nvidia drivers working correctly. It seems that a lot of people have issues with them, and one of the fixes involved insuring secure boot was off. I went into my BIOS and then as soon as I restarted, Windows booted immediately.

I fixed this issue by manually changing my bootorder and then reconfiguring efibootmgr.

Is there a permanent way to stop this happening? I'm suspecting it's something to do with the way Windows works and writes to the boot drive. Whilst it's not a major issue as I know how to fix it I don't want to have to do this everytime I go into BIOS for anything.

Thanks, Chopper

ChopperRated
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  • Is Windows' FastBoot off? Also, you could just let the BIOS/UEFI load Windows' Boot Manager and configure that one (using bcdedit) to boot GRUB instead of Windows. That's how I did it... – Byte Commander May 09 '16 at 14:17
  • Many with HP, have to use the Hard Drive boot entry which is /EFI/Boot/bootx64.efi. That is a default or fallback UEFI boot entry that seems to still work when /EFI/ubuntu will not. Normally Windows makes bootx64.efi a copy of the Windows efi file, but we change that to shimx64.efi. http://askubuntu.com/questions/486752/dual-boot-win-8-ubuntu-loads-only-win/486789#486789 and/or: https://askubuntu.com/questions/597052/can-not-boot-anymore-after-a-boot-repair Or edit Widnows BCD or use rEFInd (both in first link). – oldfred May 09 '16 at 16:12
  • I left my laptop at work but I'll definitely try these tomorrow and let you know how I get on – ChopperRated May 09 '16 at 17:56

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