wˌɛn ɐ kəmpjˈuːɾɚɹ ɪz bˈuːɾᵻd, jˈuːfi fˈɜːmwɛɹ lˈoʊdz fˈaɪlz stˈoːɹd ɔnðɪ ˌiːˌɛspˈiː tə stˈɑːɹt ɪnstˈɔːlɪŋ ˈɑːpɚɹˌeɪɾɪŋ sˈɪstəmz ænd vˈɛɹiəs juːtˈɪlᵻɾiz.
When a computer is booted, UEFI firmware loads files stored on the ESP to start installing operating systems and various utilities.