nˈɑːnmˈækɪntˌɑːʃ sˈɪstəmz, nˈoʊɾəbli wˈɪndoʊz ænd lˈɪnʌks, mˈeɪ nˌɑːt biː tˈɪpɪkli bˈuːɾᵻd ɪn ˌiːˌɛfˈaɪ mˈoʊd ænd ðˈʌs jˌuːˌɛsbˈiː bˈuːɾɪŋ mˈeɪ biː lˈɪmɪɾᵻd tə səpˈoːɹɾᵻd hˈɑːɹdwɛɹ ænd sˈɔftwɛɹ kˌɑːmbᵻnˈeɪʃənz ðæt kæn ˈiːzili biː bˈuːɾᵻd vˈaɪəɹ ˌiːˌɛfˈaɪ.
Non-Macintosh systems, notably Windows and Linux, may not be typically booted in EFI mode and thus USB booting may be limited to supported hardware and software combinations that can easily be booted via EFI.