wˈʌns lˈoʊdᵻd baɪ ɐ jˈuːfi fˈɜːmwɛɹ, ðeɪ bˈoʊθ kæn ˈæksɛs ænd bˈuːt kˈɜːnəl ˈɪmɪdʒᵻz fɹʌm ˈɔːl dɪvˈaɪsᵻz, pɑːɹtˈɪʃənz ænd fˈaɪl sˈɪstəmz ðeɪ səpˈoːɹt, wɪðˌaʊt bˌiːɪŋ lˈɪmɪɾᵻd tə ðɪ ˌiːˌɛfˈaɪ sˈɪstəm pɑːɹtˈɪʃən.
Once loaded by a UEFI firmware, they both can access and boot kernel images from all devices, partitions and file systems they support, without being limited to the EFI system partition.