I installed antergos-2014.12.19-x86_64
in short: install seemed OK but ended with the generic Grub install failed message.
multi boot system, I fixed Grub
boot error message:
unable to find root device 'UUID=ad4103fa-d940-47ca-8506-301d8071d476"
the correct UUID is 68d518fc-1f39-4257-81fb-a699aa725210
the fstab shows the correct UUID for both / and /home
I have copious install notes if anybody cares.