* DiscImageChef.Decoders/SCSI/Modes.cs:

Check for vendor pages not following page format (even if
	  they must).

	* DiscImageChef.Devices/Device/Constructor.cs:
	  Some devices (at least smsc usb-floppy) crash and reset when
	  receiving ata over the ATA PASS-THROUGH scsi command. This
	  will check for SCSI compliance first giving devices time to
	  reset.

	* DiscImageChef.Devices/Device/ScsiCommands.cs:
	  Some devices (smsc usb floppies) return the real command
	  result size disregarding allocation length and generating a
	  buffer overflow.

	* DiscImageChef.Devices/Enums.cs:
	  Added some vendor commands for Plextor and HL-DT-ST devices.

	* DiscImageChef/Commands/DeviceInfo.cs:
	  Mode sense should be written even if it can't be decoded.

DiscImageChef.Devices/Enums.cs

@@ -2559,7 +2559,29 @@ namespace DiscImageChef.Devices
         /// Variable sized Command Description Block
         /// SPC-4 rev. 16
         /// </summary>
-        VariableSizedCDB = 0x7F
+        VariableSizedCDB = 0x7F,
+
+        #region Plextor vendor commands
+        /// <summary>
+        /// Sends extended commands (like SpeedRead) to Plextor drives
+        /// </summary>
+        Plextor_Extend = 0xE9,
+        /// <summary>
+        /// Resets Plextor drives
+        /// </summary>
+        Plextor_Reset = 0xEE,
+        /// <summary>
+        /// Reads drive statistics from Plextor drives EEPROM
+        /// </summary>
+        Plextor_ReadEeprom = 0xF1,
+        #endregion Plextor vendor commands
+
+        #region HL-DT-ST vendor commands
+        /// <summary>
+        /// Sends debugging commands to HL-DT-ST DVD drives
+        /// </summary>
+        HlDtSt_Vendor = 0xE7
+        #endregion HL-DT-ST vendor commands
     }
     #endregion SCSI Commands