I installed my entire Ubuntu OS on HDD along with it EFI. I already has a EFI in Local Disk C but there was not enough space available to install Ubuntu in there. I wanted to know that will it cause any problem.
Moreover , I wanted to know how to confiugre my dual boot such that every time I see the menu of selecting between Windows10 & Ubuntu.
Thank You
EFI is designed so that there should be a single EFI partition per device for all operating systems. However, it should not cause problems that you have more than one EFI partition on your system.
In order to get GRUB on every boot, you must change your UEFI settings in your motherboard so that the volume with Ubuntu/GRUB is the first boot priority. You will need to consult with the documentation for your computer's motherboard for this step because it is a function of your motherboard's firmware. It's not related to Ubuntu or any other operating system and the process varies between different models of motherboards.
