Macos Yosemite is not showing EFI

I took my 7 year old mini pc, but noticed that there no EFI loader that can run MacOS Yosemite, so, few hours later, I found my USB stick with label Yosemite, I tried to make EFI to run without usb stick, but after restarting, folder disappeared. Any ideas? Using Yosemite on this mini pc since 7 years ago

submitted by /u/Cultural_Bug_3038
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