diff --git a/DiscImageChef.Devices/Structs.cs b/DiscImageChef.Decoders/ATA/Errors.cs
similarity index 94%
rename from DiscImageChef.Devices/Structs.cs
rename to DiscImageChef.Decoders/ATA/Errors.cs
index c78e0595..877a463b 100644
--- a/DiscImageChef.Devices/Structs.cs
+++ b/DiscImageChef.Decoders/ATA/Errors.cs
@@ -2,11 +2,11 @@
 // The Disc Image Chef
 // ----------------------------------------------------------------------------
 //
-// Filename       : Structs.cs
+// Filename       : Errors.cs
 // Version        : 1.0
 // Author(s)      : Natalia Portillo
 //
-// Component      : Direct device access
+// Component      : Component
 //
 // Revision       : $Revision$
 // Last change by : $Author$
@@ -14,7 +14,7 @@
 //
 // --[ Description ] ----------------------------------------------------------
 //
-// Contains enumerations that are common to all operating systems
+// Description
 //
 // --[ License ] --------------------------------------------------------------
 //
@@ -37,7 +37,7 @@
 // //$Id$
 using System;
 
-namespace DiscImageChef.Devices
+namespace DiscImageChef.Decoders.ATA
 {
     public struct AtaRegistersCHS
     {
diff --git a/DiscImageChef.Decoders/ChangeLog b/DiscImageChef.Decoders/ChangeLog
index cd18e984..f8ea336c 100644
--- a/DiscImageChef.Decoders/ChangeLog
+++ b/DiscImageChef.Decoders/ChangeLog
@@ -1,3 +1,12 @@
+2015-11-23  Natalia Portillo  <claunia@claunia.com>
+
+	* ATA/Errors.cs:
+	* DiscImageChef.Decoders.csproj:
+	  Moved ATA register definition to a more common place.
+
+	* SCSI/Sense.cs:
+	  Added information from SAT-4.
+
 2015-11-23  Natalia Portillo  <claunia@claunia.com>
 
 	* SCSI/Sense.cs:
diff --git a/DiscImageChef.Decoders/DiscImageChef.Decoders.csproj b/DiscImageChef.Decoders/DiscImageChef.Decoders.csproj
index eddc45ff..2cf746d7 100644
--- a/DiscImageChef.Decoders/DiscImageChef.Decoders.csproj
+++ b/DiscImageChef.Decoders/DiscImageChef.Decoders.csproj
@@ -83,6 +83,7 @@
     <Compile Include="SCSI\MMC\Features.cs" />
     <Compile Include="SCSI\DiscStructureCapabilities.cs" />
     <Compile Include="SCSI\Sense.cs" />
+    <Compile Include="ATA\Errors.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>
diff --git a/DiscImageChef.Decoders/SCSI/Sense.cs b/DiscImageChef.Decoders/SCSI/Sense.cs
index 13cb54b4..ca922057 100644
--- a/DiscImageChef.Decoders/SCSI/Sense.cs
+++ b/DiscImageChef.Decoders/SCSI/Sense.cs
@@ -38,6 +38,7 @@
 using System;
 using System.Text;
 using System.Collections.Generic;
+using DiscImageChef.Decoders.ATA;
 
 namespace DiscImageChef.Decoders.SCSI
 {
@@ -621,9 +622,19 @@ namespace DiscImageChef.Decoders.SCSI
             throw new NotImplementedException("Check OSD");
         }
 
-        public static void DecodeDescriptor09(byte[] descriptor)
+        public static AtaErrorRegistersLBA48 DecodeDescriptor09(byte[] descriptor)
         {
-            throw new NotImplementedException("Check SAT-3");
+            AtaErrorRegistersLBA48 errorRegisters = new AtaErrorRegistersLBA48();
+
+            errorRegisters.error = descriptor[3];
+            errorRegisters.sectorCount = (ushort)((descriptor[4] << 8) + descriptor[5]);
+            errorRegisters.lbaLow = (ushort)((descriptor[6] << 8) + descriptor[7]);
+            errorRegisters.lbaMid = (ushort)((descriptor[8] << 8) + descriptor[9]);
+            errorRegisters.lbaHigh = (ushort)((descriptor[10] << 8) + descriptor[11]);
+            errorRegisters.deviceHead = descriptor[12];
+            errorRegisters.status = descriptor[13];
+
+            return errorRegisters;
         }
 
         public static void DecodeDescriptor0B(byte[] descriptor)
diff --git a/DiscImageChef.Devices/ChangeLog b/DiscImageChef.Devices/ChangeLog
index 2c1e0f06..98fbd2c3 100644
--- a/DiscImageChef.Devices/ChangeLog
+++ b/DiscImageChef.Devices/ChangeLog
@@ -1,3 +1,14 @@
+2015-11-23  Natalia Portillo  <claunia@claunia.com>
+
+	* Command.cs:
+	* Linux/Command.cs:
+	* Device/Commands.cs:
+	* Device/AtaCommands.cs:
+	* Device/Constructor.cs:
+	* Device/AtapiCommands.cs:
+	* DiscImageChef.Devices.csproj:
+	  Moved ATA register definition to a more common place.
+
 2015-11-05  Natalia Portillo  <claunia@claunia.com>
 
 	* Device/Constructor.cs:
diff --git a/DiscImageChef.Devices/Command.cs b/DiscImageChef.Devices/Command.cs
index 3ef6cce0..e71dd61f 100644
--- a/DiscImageChef.Devices/Command.cs
+++ b/DiscImageChef.Devices/Command.cs
@@ -39,6 +39,7 @@
 using System;
 using DiscImageChef.Interop;
 using Microsoft.Win32.SafeHandles;
+using DiscImageChef.Decoders.ATA;
 
 namespace DiscImageChef.Devices
 {
diff --git a/DiscImageChef.Devices/Device/AtaCommands.cs b/DiscImageChef.Devices/Device/AtaCommands.cs
index 06891ae9..433a2573 100644
--- a/DiscImageChef.Devices/Device/AtaCommands.cs
+++ b/DiscImageChef.Devices/Device/AtaCommands.cs
@@ -37,6 +37,7 @@
 // //$Id$
 using System;
 using DiscImageChef.Console;
+using DiscImageChef.Decoders.ATA;
 
 namespace DiscImageChef.Devices
 {
diff --git a/DiscImageChef.Devices/Device/AtapiCommands.cs b/DiscImageChef.Devices/Device/AtapiCommands.cs
index 93366871..6195b703 100644
--- a/DiscImageChef.Devices/Device/AtapiCommands.cs
+++ b/DiscImageChef.Devices/Device/AtapiCommands.cs
@@ -37,6 +37,7 @@
 // //$Id$
 using System;
 using DiscImageChef.Console;
+using DiscImageChef.Decoders.ATA;
 
 namespace DiscImageChef.Devices
 {
diff --git a/DiscImageChef.Devices/Device/Commands.cs b/DiscImageChef.Devices/Device/Commands.cs
index 7ece5d35..81c6f4da 100644
--- a/DiscImageChef.Devices/Device/Commands.cs
+++ b/DiscImageChef.Devices/Device/Commands.cs
@@ -36,6 +36,7 @@
 // ****************************************************************************/
 // //$Id$
 using System;
+using DiscImageChef.Decoders.ATA;
 
 namespace DiscImageChef.Devices
 {
diff --git a/DiscImageChef.Devices/Device/Constructor.cs b/DiscImageChef.Devices/Device/Constructor.cs
index 7f153e2f..b4e87fa8 100644
--- a/DiscImageChef.Devices/Device/Constructor.cs
+++ b/DiscImageChef.Devices/Device/Constructor.cs
@@ -38,6 +38,7 @@
 using System;
 using Microsoft.Win32.SafeHandles;
 using System.Runtime.InteropServices;
+using DiscImageChef.Decoders.ATA;
 
 namespace DiscImageChef.Devices
 {
diff --git a/DiscImageChef.Devices/DiscImageChef.Devices.csproj b/DiscImageChef.Devices/DiscImageChef.Devices.csproj
index b3414488..a49ff650 100644
--- a/DiscImageChef.Devices/DiscImageChef.Devices.csproj
+++ b/DiscImageChef.Devices/DiscImageChef.Devices.csproj
@@ -49,7 +49,6 @@
     <Compile Include="Device\Destructor.cs" />
     <Compile Include="Device\Commands.cs" />
     <Compile Include="Device\ScsiCommands.cs" />
-    <Compile Include="Structs.cs" />
     <Compile Include="Device\AtaCommands.cs" />
     <Compile Include="Device\AtapiCommands.cs" />
   </ItemGroup>
diff --git a/DiscImageChef.Devices/Linux/Command.cs b/DiscImageChef.Devices/Linux/Command.cs
index 11f23b79..e23b66ce 100644
--- a/DiscImageChef.Devices/Linux/Command.cs
+++ b/DiscImageChef.Devices/Linux/Command.cs
@@ -39,6 +39,7 @@
 
 using System;
 using System.Runtime.InteropServices;
+using DiscImageChef.Decoders.ATA;
 
 namespace DiscImageChef.Devices.Linux
 {
diff --git a/DiscImageChef/ChangeLog b/DiscImageChef/ChangeLog
index 89c47fc1..71fbf2b0 100644
--- a/DiscImageChef/ChangeLog
+++ b/DiscImageChef/ChangeLog
@@ -1,3 +1,8 @@
+2015-11-23  Natalia Portillo  <claunia@claunia.com>
+
+	* Commands/DeviceInfo.cs:
+	  Moved ATA register definition to a more common place.
+
 2015-11-10  Natalia Portillo  <claunia@claunia.com>
 
 	* Commands/Checksum.cs:
diff --git a/DiscImageChef/Commands/DeviceInfo.cs b/DiscImageChef/Commands/DeviceInfo.cs
index 1d7ea929..a07d9fb5 100644
--- a/DiscImageChef/Commands/DeviceInfo.cs
+++ b/DiscImageChef/Commands/DeviceInfo.cs
@@ -40,6 +40,7 @@ using DiscImageChef.Devices;
 using System.IO;
 using DiscImageChef.Console;
 using System.Text;
+using DiscImageChef.Decoders.ATA;
 
 namespace DiscImageChef.Commands
 {