Hi Chris,Thank you for writing.Actually I am struggling to make my HP Envy laptop, dual boot with Ubuntu since quite a few days.Initially I tried installing latest 18.04.3 using live USB; my installation went through however windows 10 started booting by default and there was no change in behaviour even after disabling secure boot. Over the period of time I realized that it has something to do with GRUB installation as during booting I was not able to see GRUB coming into action.While I was still trying to find a resolution of this issue, my live USB booting started giving me errors saying "EFI boot failed" and again I was clueless. Meanwhile, I found this link:https://www.lifewire.com/fix-uefi-bootloader-issues-when-dual-booting-2200655which I thought was worth trying, so I tried installing Ubuntu again from already available USB stick which was smaller in size and it was already having that older Ubuntu image and that is where I landed in this error.By the way, following the link above when I tried using efibootmgr command after booting from older version of live usb stick, I was surprised to see that "Ubuntu" was missing there in list. Now, I am back to the same position and thinking to start the process all over again!I would highly appreciate any suggestions in this regards.Thanks,Shrenik.From: Chris Guiver <