Add help text to disk selection dialog

src/lib/autoinstall/dialogs/disk_selector.rb

@@ -37,15 +37,18 @@ class DiskSelector < UI::Dialog
       attr_reader :devicegraph
       # @return [Array<String>] Device names that should be omitted
       attr_reader :blacklist
+      # @return [Integer] Drive section index
+      attr_reader :drive_index
 
       # Constructor
       #
       # @param devicegraph [Y2Storage::Devicegraph] Devicegraph used to find disks.
       #   By default, the probed devicegraph is used.
       # @param blacklist   [Array<String>] Device names that should be omitted.
       #   These disks will be filtered out.
-      def initialize(devicegraph = nil, blacklist: [])
+      def initialize(devicegraph = nil, drive_index = 1, blacklist: [])
         @devicegraph = devicegraph || Y2Storage::StorageManager.instance.probed
+        @drive_index = drive_index
         @blacklist = blacklist
       end
 
@@ -63,7 +66,7 @@ def dialog_content
       # @return [Yast::Term] Dialog content
       def disks_content
         VBox(
-          Label(_("Choose a hard disk")),
+          Label(help_text),
           RadioButtonGroup(
             Id(:options),
             VBox(*options)
@@ -146,6 +149,14 @@ def abort_button
       def label(disk)
         "#{disk.basename}, #{disk.hwinfo.model}, #{disk.hwinfo.vendor}"
       end
+
+      # Help text
+      def help_text
+        # TRANSLATORS: %s will be replaced by a number
+        _("All hard disks automatically detected on your system\n" \
+          "are shown here. Select a hard disk to be used in the\n" \
+          "#%s drive section of your AutoYaST profile.") % drive_index
+      end
     end
   end
 end