diff --git a/DiscImageChef.DiscImages/Apple2MG/Identify.cs b/DiscImageChef.DiscImages/Apple2MG/Identify.cs
index ae7ebf7c1..170b88286 100644
--- a/DiscImageChef.DiscImages/Apple2MG/Identify.cs
+++ b/DiscImageChef.DiscImages/Apple2MG/Identify.cs
@@ -30,9 +30,9 @@
 // Copyright © 2011-2019 Natalia Portillo
 // ****************************************************************************/
 
-using System;
 using System.IO;
 using DiscImageChef.CommonTypes.Interfaces;
+using DiscImageChef.Helpers;
 
 namespace DiscImageChef.DiscImages
 {
@@ -48,28 +48,23 @@ namespace DiscImageChef.DiscImages
             byte[] header = new byte[64];
             stream.Read(header, 0, 64);
 
-            uint magic = BitConverter.ToUInt32(header, 0x00);
-            if(magic != MAGIC) return false;
+            A2ImgHeader hdr = Marshal.SpanToStructureLittleEndian<A2ImgHeader>(header);
 
-            uint dataoff = BitConverter.ToUInt32(header, 0x18);
-            if(dataoff > stream.Length) return false;
+            if(hdr.Magic != MAGIC) return false;
+
+            if(hdr.DataOffset > stream.Length) return false;
 
-            uint datasize = BitConverter.ToUInt32(header, 0x1C);
             // There seems to be incorrect endian in some images on the wild
-            if(datasize           == 0x00800C00) datasize = 0x000C8000;
-            if(dataoff + datasize > stream.Length) return false;
+            if(hdr.DataSize                  == 0x00800C00) hdr.DataSize = 0x000C8000;
+            if(hdr.DataOffset + hdr.DataSize > stream.Length) return false;
 
-            uint commentoff = BitConverter.ToUInt32(header, 0x20);
-            if(commentoff > stream.Length) return false;
+            if(hdr.CommentOffset > stream.Length) return false;
 
-            uint commentsize = BitConverter.ToUInt32(header, 0x24);
-            if(commentoff + commentsize > stream.Length) return false;
+            if(hdr.CommentOffset + hdr.CommentSize > stream.Length) return false;
 
-            uint creatoroff = BitConverter.ToUInt32(header, 0x28);
-            if(creatoroff > stream.Length) return false;
+            if(hdr.CreatorSpecificOffset > stream.Length) return false;
 
-            uint creatorsize = BitConverter.ToUInt32(header, 0x2C);
-            return creatoroff + creatorsize <= stream.Length;
+            return hdr.CreatorSpecificOffset + hdr.CreatorSpecificSize <= stream.Length;
         }
     }
 }
\ No newline at end of file
diff --git a/DiscImageChef.DiscImages/Apple2MG/Read.cs b/DiscImageChef.DiscImages/Apple2MG/Read.cs
index 172fa3b6c..4757466df 100644
--- a/DiscImageChef.DiscImages/Apple2MG/Read.cs
+++ b/DiscImageChef.DiscImages/Apple2MG/Read.cs
@@ -38,6 +38,7 @@ using DiscImageChef.CommonTypes.Enums;
 using DiscImageChef.CommonTypes.Interfaces;
 using DiscImageChef.Console;
 using DiscImageChef.Filters;
+using DiscImageChef.Helpers;
 
 namespace DiscImageChef.DiscImages
 {
@@ -58,23 +59,7 @@ namespace DiscImageChef.DiscImages
             Array.Copy(header, 0, magic,   0, 4);
             Array.Copy(header, 4, creator, 0, 4);
 
-            imageHeader.Magic                 = BitConverter.ToUInt32(header, 0x00);
-            imageHeader.Creator               = BitConverter.ToUInt32(header, 0x04);
-            imageHeader.HeaderSize            = BitConverter.ToUInt16(header, 0x08);
-            imageHeader.Version               = BitConverter.ToUInt16(header, 0x0A);
-            imageHeader.ImageFormat           = (SectorOrder)BitConverter.ToUInt32(header, 0x0C);
-            imageHeader.Flags                 = BitConverter.ToUInt32(header, 0x10);
-            imageHeader.Blocks                = BitConverter.ToUInt32(header, 0x14);
-            imageHeader.DataOffset            = BitConverter.ToUInt32(header, 0x18);
-            imageHeader.DataSize              = BitConverter.ToUInt32(header, 0x1C);
-            imageHeader.CommentOffset         = BitConverter.ToUInt32(header, 0x20);
-            imageHeader.CommentSize           = BitConverter.ToUInt32(header, 0x24);
-            imageHeader.CreatorSpecificOffset = BitConverter.ToUInt32(header, 0x28);
-            imageHeader.CreatorSpecificSize   = BitConverter.ToUInt32(header, 0x2C);
-            imageHeader.Reserved1             = BitConverter.ToUInt32(header, 0x30);
-            imageHeader.Reserved2             = BitConverter.ToUInt32(header, 0x34);
-            imageHeader.Reserved3             = BitConverter.ToUInt32(header, 0x38);
-            imageHeader.Reserved4             = BitConverter.ToUInt32(header, 0x3C);
+            imageHeader = Marshal.SpanToStructureLittleEndian<A2ImgHeader>(header);
 
             if(imageHeader.DataSize == 0x00800C00)
             {