I have no more understanding nothing.
Following my procedure, if I create my iso with the command
oscdimg -o -u2 -udfver102 -bootdata:3#p0,e,b"<Windows_PE_Path>\Boot_files\etfsboot.com"#pEF,e,b"<Windows_PE_Path>\Boot_files\efisys_x32.bin"#pEF,e,b"<Windows_PE_Path>\Boot_files\efisys_x64.bin"...