Hi
I am trying to make an UBUNTU USB SSD on a GPT partition, that must be recognizable by every Mac I will plug it in.
So I have on that stick an EFI partition with the correct boot and ESP flags.
Within this EFI partition I have following contents:
https://prnt.sc/s1m-G5eEGVu2
I suppose it should be bootable that way.
But no, the Apple boot loader (Starting with ALT key depressed does not see my stick at all).
Has anyone a clue how to proceed?
Thank you for your help.
Laszlo