Choose ISO, Target, then nada

Hello -
I choose ISO, Target, then nothing happens.
Only a strange sign on Flash.
Can’t add a screenshot to this post.
Any idea?
Thank you in advance

Peter

Forgot to tell:
MacOS 11.6.3
Target formatted FAT 32

Regards

Peter

No information?

Peter

Hi, can you copy the console error output by pressing Ctrl+Shift+I (Cmd+Alt+I on Mac) and paste here?