nuc won't boot from usb after disabling secure boot

[JLeve1]

Initially secure boot enabled, I:

1. Installed ubuntu which asks for a password and uses some sort of Mok Shim to secure the os

2. After os install, immediately disabled secure boot in bios

3. Boot to USB goes straight to black screen

Ideas on how to bring this back to life?

[AlHill]

What nuc are we talking about?

Doc

[JLeve1]

its the nuc8i7hnk1

[LeonWaksman]

Your NUC can boot only UEFI boot USB. Legacy boot is disabled.

Leon