-grep -qe 'toram' -qe '2ram' -qe 'usb' -qe 'serial' \
- -qe 'fromhd' -qe 'isofrom' -qe 'fromiso' -qe 'findiso' \
- /proc/cmdline && INSTALLED=true
+checkbootparam 'toram' || checkbootparam '2ram' || checkbootparam 'usb' \
+checkbootparam 'serial' || checkbootparam 'fromhd' || checkbootparam 'isofrom' \
+checkbootparam 'fromiso' || checkbootparam 'findiso' && INSTALLED=true