iATKOS | United Kingdom

Really struggling to get this beyond Catalina :-(

I’ve done quite a few OC installs on other devices with no problems…

This one refuses to boot to the Ventura or Sequoia OC 2.2 USB Installer built and blessed.

Keeps coming up with the no entry side … If I pull the USB out live, it carries on to boot into Catalina on the HD fine…

Maybe I’m just tired … so obvious answers very welcome :-)