nˈɑːpɪks lˈaɪv sˌiːdˈiːz hæv ɐ juːtˈɪlᵻɾi ðˈæt, ˌɔn bˈuːt, ɐlˈaʊz jˈuːzɚz tə dᵻklˈɛɹ ðɛɹ ɪntˈɛnt tə ɹˈaɪt ðɪ ˈɑːpɚɹˌeɪɾɪŋ sˈɪstəmz fˈaɪl stɹˈʌktʃɚz ˈiːðɚ tˌɛmpɚɹˈɛɹᵻli, tʊ ɐ ˌɑːɹɹˌeɪˈɛm dˈɪsk, ɔːɹ pˈɜːmənəntli, ˌɔn dˈɪsk ɔːɹ flˈæʃ mˈiːdiːə tə pɹɪzˈɜːv ˌɛni ˈædᵻd kənfˌɪɡjɚɹˈeɪʃənz ænd sᵻkjˈʊɹɹᵻɾi ˈʌpdeɪts.
Knoppix live CDs have a utility that, on boot, allows users to declare their intent to write the operating system's file structures either temporarily, to a RAM disk, or permanently, on disk or flash media to preserve any added configurations and security updates.