Hi everyone,
I'm currently asking for some help after too many attempts to install Sierra without success.
Actually a year ago I managed to install El Capitan on my Z50 using your method but then suddenly I could boot on the OS because it automaticly panic and reboot before I could see anything in verbose.
Anyway I tried to make a clean install with Sierra os from a fresh start. Followed carefully the instructions but still, I have a graphic problem, when I reach the installer, the screen is completely garbled and I can't see anything. I found a trick by using an other screen by HDMI. The installer starts but at the end, reboot with no change and a BIOS message saying : couldn't boot the OS... What could be the problem here ? I used the config_install plist and I'm sure my BIOS setup is good also as my USB bootable device using Rehabman's guide and creatinstallmedia method ( without any trouble ).
Thank's in advance !