-.IP \fBpersistent\fP[=nofiles] 4
-live\-boot will look for persistent and snapshot partitions or files labeled
-"live\-rw", "home\-rw", and files called "live\-sn*", "home\-sn*" and will try
-to, in order: mount as /cow the first, mount the second in /home, and just
-copy the contents of the latter in appropriate locations
-(snapshots). Snapshots will be tried to be updated on reboot/shutdown. Look
-at live\-snapshot(1) for more informations. If "nofiles" is specified, only
-filesystems with matching labels will be searched; no filesystems will be
-traversed looking for archives or image files. This results in shorter boot
-times.
+.IP \fBpersistent\fP 4
+live\-boot will probe filesystems for persistent media. These can either be
+the filesystems themselves, if labeled correctly, or image/archive files, if
+named correctly. Overlays are labeled/named either "live\-rw" or "home\-rw"
+and will be mounted on / or /home, respectively; snapshots are labeled/named
+either "live\-sn" or "home\-sn" and will be extracted into / or /home,
+respectively (see live\-snapshot(1) for more information). Overlays are
+mounted before snapshots are extracted, and for both overlays and snapshots,
+"live\-*" are handled before "home\-*". Overlay image files and snapshot
+archive files have extensions which determines their filesystem or archive
+type, e.g. "live\-rw.ext3" and "\home\-sn.squashfs".
+.IP "\fBpersistent\-encryption\fP=\fITYPE1\fP,\fITYPE2\fP ... \fITYPEn\fP" 4
+This option determines which types of encryption that we allow to be used
+when probing devices for persistent media. If "none" is in the list, we
+allow unencrypted media; if "luks" is in the list, we allow LUKS\-encrypted
+media. Whenever a device containing encrypted media is probed the user will
+be prompted for the passphrase. The default value is "none".
+.IP \fBpersistent\-media\fP={\fIremovable\fP|\fIremovable\-usb\fP} 4
+If you specify the keyword 'removable', live\-boot will try to find
+persistent and snapshot partitions on removable media only. Note that if you
+want to further restrict the media to usb mass storage only, you can use the
+\&'removable\-usb' keyword.
+.IP "\fBpersistent\-method\fP=\fITYPE1\fP,\fITYPE2\fP ... \fITYPEn\fP" 4
+This option determines which types of persistent media we allow. If
+"overlay" is in the list, we consider overlays (i.e. "live\-rw" and
+"home\-rw"); if "snapshot" is in the list, we consider snapshots
+(i.e. "live\-sn" and "home\-sn"). The default is "overlay,snapshot".