-setstatus "FAILED configuration check";
-print "Configuration check ...\n" or die $!;
-system 'backup-checkallused'; $? and die $?;
+
+if (!$nocheck) {
+ setstatus "FAILED configuration check";
+ print "Configuration check ...\n" or die $!;
+ system 'backup-checkallused'; $? and die $?;
+} else {
+ setstatus "FAILED rewinding";
+ rewind_raw();
+}