jˈuːfi fˈɜːmwɛɹ dʌznˌɑːt ˈɛksᵻkjˌuːt ðə kˈoʊd ɪnðɪ ˌɛmbˌiːˈɑːɹ, ɛksˈɛpt wɛn bˈuːɾɪŋ ɪn lˈɛɡəsi bˈaɪoʊz mˈoʊd θɹuː ðə kəmpˌæɾəbˈɪlᵻɾi səpˈoːɹt mˈɑːdʒuːl sˌiːˌɛsˈɛm.
UEFI firmware does not execute the code in the MBR, except when booting in legacy BIOS mode through the Compatibility Support Module (CSM).