USB does not show up as UEFI boot device

I have followed these steps:

  • Format USB with single HFS+ partition

  • Use terminal to copy sierra install to USB

  • Install clover 2.4 to USB, checking the UEFI option but leaving install in EFI partition unchecked

  • Copy kexts to USB

When I boot I cannot select this USB drive (unless I have legacy mode enabled), so it is not being seen as a UEFI device. Do I need to create an EFI partition on the USB and have clover install to that? I have also tried just checking the box and oddly it did not complain even though I don't have an EFI partition on the USB drive - so not sure what if anything it did there.

I am new to this UEFI thing. I always used legacy before but just reinstalled my main OS (linux) as UEFI and disabled legacy boot to prepare for clover/macOS.

submitted by /u/grizzlebizzle1
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