Did you not think to, y’know, Google it? It’s Secure Boot and the T2 that’s the issue, which can evidently be disabled: https://www.google.ca/amp/s/www.omgubu

Did you not think to, y’know, Google it? It’s Secure Boot and the T2 that’s the issue, which can evidently be disabled: https://www.google.ca/amp/s/www.omgubuntu.co.uk/2018/11/apple-t2-chip-cant-boot-linux/amp https://www.google.ca/amp/s/www.omgubuntu.co.uk/2018/11/appl...