I used Ubuntu on an old Chromebook for about a year and have pretty good experience using it. I recently got an HP laptop and decided to dual-boot it between windows 10 and ubuntu (homesick, i guess. :P)
Anyway, it all worked fine. Installation worked and I restarted the computer--only to find no menu asking me which OS to boot into. It just went straight to Windows 10!
How do I boot into Ubuntu?