diff --git a/structures/FileSystem.inc b/structures/FileSystem.inc
index bcbf1d8..6d87435 100644
--- a/structures/FileSystem.inc
+++ b/structures/FileSystem.inc
@@ -1,4 +1,5 @@
 ;
+//---------------------------------------------------------------------------
  STRUCT _sBOOT_SEC                                         	; 62 bytes
 .JMP:                           BLOCK   3,0                	; +#00 "JMP"
 .ID_NAME:                       TEXT    8,	{"DSS_1.7","0"}	; +#03 DOS NAME - DB "DSS_1.70"
@@ -27,9 +28,28 @@
 
  STRUCT	_sMBR_Table
  ENDS
-
 //---------------------------------------------------------------------------
 
+;
+//---------------------------------------------------------------------------
+PartitionSysTypes:
+.Empty			EQU #00
+.FAT12			EQU #01
+.FAT16_32M		EQU #04
+.Extended		EQU #05
+.FAT16			EQU #06
+.HPFS_NTFS		EQU #07	
+.FAT32			EQU #0B
+.FAT32_LBA		EQU #0C	
+.FAT16_LBA		EQU #0E	
+.Win_Ext_LBA		EQU #0F		
+.Linux_swap		EQU #82	
+.Linux			EQU #83
+.Linux_extended		EQU #85	
+//---------------------------------------------------------------------------
+
+;
+//---------------------------------------------------------------------------
 ;  * DOS partition types
 ;  *
 ;  * Taken from fdisk/i386_sys_types.c and fdisk/common.h of