-"Add a suffix when searching for the image filenames or partition labels to "
-"use for the above mentioned persistence feature, the SUFFIX will be added "
-"after a dash (e.g.: \"live-sn\" would transform to \"live-sn-SUFFIX\"). This "
-"is handy to test multiple live-boot based live-systems with different "
-"persistence storage choices."
+"live-boot will use the name \"LABEL\" instead of \"persistence\" when "
+"searching for persistent storage. LABEL can be any valid filename, partition "
+"label, or GPT name. This option replaces the less flexible persistent-"
+"subtext option from version 2 of live-boot. If you wish to continue using "
+"legacy names for persistent storage, use the full name with this option, e."
+"g. persistence-label=live-rw-foo"