Originally Posted by
Sepulcher
Hello and thank you for your answers!
I try two things:
1 - Formatting my USB HFS + with a GUID partition scheme, then I put the planks of the dvd files.
Result: the boot is when I press Alt it detects nothing.
2-I create an image .Dmg files to DVD then I restore the image on the key formatted as HFS + but still without GUID.
Result: nothing to detect such
3 - Same as the two with GUID scheme.
I do not understand, as if something was missing to identify the key at boot:/ You have to press Alt and not on T or C for specific types of non-boot?
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