
At the Boot Device Menu, use the arrow keys to highlight the option which mentions “USB”, “EFI”, or the flash drive manufacturer’s name.

If you’re using a wireless keyboard, you may need to plug in a USB keyboard instead to be able to select the boot device. Press and hold the ⌥ Option key at start-up. If you’re unsure which key to press, it is usually either Esc, Delete, F2, F12, or another function key. This key should be indicated on the screen at start-up or in your computer’s manual. Immediately at start-up, repeatedly press the designated key to open the Boot Device Menu.

iso file to a USB flash drive with one of these alternatives:

Instead of using balenaEtcher, try writing the Zorin OS.
