Refind
From wikinotes
An opensource boot manager.
Documentation
repo https://sourceforge.net/p/refind/code/ci/master/tree/ official docs http://www.rodsbooks.com/refind/ official docs: configuration http://www.rodsbooks.com/refind/configfile.html official docs: usage http://www.rodsbooks.com/refind/using.html
Locations
/boot/EFI/refind/refind.conf
config /boot/EFI/refind/themes/${theme}/*
theme files
Notes
refind install refind setup refind configuration