How to detect an EFI aware OS?

How to detect an EFI aware OS?

How does the EFI bios detects the type of OS (legacy or EFI aware)? I believe it must have two paths, for booting legacy (typically using int19 and int13 services) and for EFI aware one. kindly lemme know how it is done in the latter path..

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Thus far we haven't had any luck identifying an engineering contact able to address this for you, as this is somewhat outside the scope of what we usually cover in the Intel Software Network. If you haven't already, you might also try this discussion group; if you work for a company that has an Intel representative, we also recommend contacting your Intel rep for design support.

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