I think we said to use disc over disk.

modules/gui/qt4/ui/open_disk.ui

@@ -119,7 +119,7 @@
       <item row="3" column="0" colspan="3" >
        <widget class="QLabel" name="deviceLabel" >
         <property name="text" >
-         <string>_("Disk device")</string>
+         <string>_("Disc device")</string>
         </property>
         <property name="buddy" >
          <cstring>deviceCombo</cstring>