I have Acer Aspire V 15 Nitro with pre-installed Windows 10. I want to install Ubuntu 16.04 too.
I tried to follow this:
Installing Ubuntu Alongside a Pre-Installed Windows with UEFI
and some guides on the internet too.
I am never able to boot Ubuntu. I do not even see the USB with Ubuntu on it, Windows bootloader everytime boots Windows even if it has the lowest priority, set via BIOS settings, and the USB the highest.
I can install ubuntu, because in advanced restart options, there is an option to boot from USB. While installing I can choose "Install Ubuntu aside of Windows 10", but Ubuntu never boots while choosing this option.
I tried this booting with secure boot enabled and disabled too.
I thought that there may be a problem, because I have 128GB SSD and 1TB HDD, but Itried to install everything on SSD and it did not work.
Best option is to install it the way, that both systems work, use SSD for system and HDD split in half for data. Detailed answer would be appreciated.