diff --git a/MediaType.cs b/MediaType.cs
index 41bde7372..43b9dca82 100644
--- a/MediaType.cs
+++ b/MediaType.cs
@@ -206,7 +206,17 @@ namespace DiscImageChef.CommonTypes
         /// <summary>Sony Hi-MD</summary>
         HiMD = 90,
         /// <summary>Sony MiniDisc</summary>
-        MD = 91, MDData = 92, MDData2 = 93,
+        MD = 91,
+        /// <summary>Sony MD-Data</summary>
+        MDData = 92,
+        /// <summary>Sony MD-Data2</summary>
+        MDData2 = 93,
+        /// <summary>Sony MiniDisc, 60 minutes, formatted with Hi-MD format</summary>
+        MD60 = 94,
+        /// <summary>Sony MiniDisc, 74 minutes, formatted with Hi-MD format</summary>
+        MD74 = 95,
+        /// <summary>Sony MiniDisc, 80 minutes, formatted with Hi-MD format</summary>
+        MD80 = 96,
         #endregion MiniDisc based, types 90 to 99
 
         #region Plasmon UDO, types 100 to 109
diff --git a/Metadata/Dimensions.cs b/Metadata/Dimensions.cs
index 35c6cdd45..e6efa95ed 100644
--- a/Metadata/Dimensions.cs
+++ b/Metadata/Dimensions.cs
@@ -533,6 +533,9 @@ namespace DiscImageChef.CommonTypes.Metadata
                 case CommonTypes.MediaType.MD:
                 case CommonTypes.MediaType.MDData:
                 case CommonTypes.MediaType.MDData2:
+                case CommonTypes.MediaType.MD60:
+                case CommonTypes.MediaType.MD74:
+                case CommonTypes.MediaType.MD80:
                     dmns.Height          = 68;
                     dmns.HeightSpecified = true;
                     dmns.Width           = 71.5;
diff --git a/Metadata/MediaType.cs b/Metadata/MediaType.cs
index 586f63ccd..76e9137b1 100644
--- a/Metadata/MediaType.cs
+++ b/Metadata/MediaType.cs
@@ -304,7 +304,7 @@ namespace DiscImageChef.CommonTypes.Metadata
                     break;
                 case CommonTypes.MediaType.HiMD:
                     discType    = "MiniDisc";
-                    discSubType = "HiMD";
+                    discSubType = "Hi-MD";
 
                     break;
                 case CommonTypes.MediaType.HVD:
@@ -336,6 +336,21 @@ namespace DiscImageChef.CommonTypes.Metadata
                     discType    = "MiniDisc";
                     discSubType = "MiniDisc";
 
+                    break;
+                case CommonTypes.MediaType.MD60:
+                    discType    = "MiniDisc";
+                    discSubType = "MiniDisc (60 minute)";
+
+                    break;
+                case CommonTypes.MediaType.MD74:
+                    discType    = "MiniDisc";
+                    discSubType = "MiniDisc (74 minute)";
+
+                    break;
+                case CommonTypes.MediaType.MD80:
+                    discType    = "MiniDisc";
+                    discSubType = "MiniDisc (80 minute)";
+
                     break;
                 case CommonTypes.MediaType.MEGACD:
                     discType    = "Compact Disc";