My 15" Macbook Pro Late 2011 have a crooked GPU and won't finish any reinstallation of OSX. tried to verbose it in installation and it hanged in hardware validation or something that make me believe the failed GPU obstruct OSX reinstallation. Tried all MacOS installer from LionX, to HighSierra.
I managed to installed it with Ubuntu 18.04 that somehow didn't do hardware validation in order to install the OS. It work flawlessly and I want try my luck to install OSX again. So, my question can I make a new OSX installation and double boot it with already-installed ubuntu. All the tutorial I found was about dual booting ubuntu with already-installed OSX. How can I manage to do this scenario?