I have an Acer Aspire laptop with an intel I5 processor. I'm trying to install ubuntu alongside Windows 8.1. My problem is my boot manager is NOT finding my external hard drive nor the dvd I made with the ubuntu ISO. I've done everything I can think of including re-prioritizing the boot order so the Windows boot manager is the lowest priority. I've turned off fast boot and secure boot, restarted my laptop and the boot manager still only lists the option to boot windows.
Any ideas? Thanks, Alex