Rebooted Antergos with Gnome after update. Just wanted a fresh start.
First time for this part of my education, so here goes:
error message as above then:
kernel panic - not syncing: attempted to kill init exitcode=0x0007e00
end kernel panic
I can supply call trace lines etc but reading about problems similar might point to grub.
I tried booting with usb containing antergos 18.2 live disk and that booted up fine into live.
its a lenovo z710 ideapad bought in 2014.