iATKOS | United Kingdom

Had to start over on this iMac and so it now is running Monterey. It was doing fine with OCLP and Sequoia but I had a glitch and had to wipe the machine and start over.

This morning I built the installer as I have done several times on this machine and others but for some reason, when I do the final reboot to install Sequoia, I hold down command when I see the Apple logo, and then I end up back at the Monterey log in screen.

If I try to run the installer from the USB drive, I get an error message saying ti isn't supported.

Can anyone help me? Thanks.