diff --git a/structures/FileSystem.inc b/structures/FileSystem.inc
index 3d79997..9937a31 100644
--- a/structures/FileSystem.inc
+++ b/structures/FileSystem.inc
@@ -1,57 +1,64 @@
 ;
 //---------------------------------------------------------------------------
- STRUCT _sBOOT_SECTOR
-PARAMS		_sBOOT_SEC
- ENDS
-
-
- 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"
+ STRUCT _sBOOT_SECTOR_PARAMS					; 62 bytes
+.JMP				BLOCK	3,0                	; +#00 "JMP"
+.ID_NAME			TEXT	8,	{"DSS_1.7","0"}	; +#03 DOS NAME - DB "DSS_1.70"
 ; Block	Parameters BIOS
-B_P_S				WORD	#200               	; +#0B  BYTE PER SECTOR
-S_P_C				BYTE	2                  	; +#0D  SECTORS PER CLUSTER
-RESERVE				WORD	1                  	; +#0E  RESERVE SECTORS
-FAT_NUM				BYTE	2                  	; +#10  AMOUNT FATS
-F_P_DIR				WORD	112                	; +#11  FILES IN DIRECTORY
-S_P_D				WORD	1440               	; +#13  ALL SECTORS ON DISK
-ID_FORM				BYTE	#F0                	; +#15  ID FORMAT
-S_P_F				WORD	2                  	; +#16  SIZE FAT IN SECTORS
-S_P_T				WORD	9                  	; +#18  SECTOR PER TRACK
-HEADS				WORD	2                  	; +#1A  AMOUNT SIDES
-HIDDEN				DWORD	0                  	; +#1C  HIDDEN SECTORS
-BPB_BIG_TOTAL_SECTORS		DWORD	0                  	; +#20  BIG TOTAL SECTOR
-BPB_PHISICAL_DRIVE_NUMBER	WORD	#80                	; +#24  PHISICAL DRIVE NUMBER
-BPB_EXT_BOOT_RECORD_SIGNATURE	BYTE	#29                	; +#26  EXTENDED BOOT RECORD SIGNATURE
-BPB_SERIAL_NUMBER		DWORD	0                  	; +#27  VOLUME SERIAL NUMBER
-BPB_LABEL			TEXT	11,	{"NO NAME"," "} ; +#2B  DISK LABEL
-ID_FAT				TEXT	8,	{"FAT16"," "}	; +#36  FILE SYSTEM ID (BPB_FS_ID) ;!TODO detect fat type by clusters!
+.B_P_S				WORD	#200               	; +#0B  BYTE PER SECTOR
+.S_P_C				BYTE	2                  	; +#0D  SECTORS PER CLUSTER
+.RESERVE			WORD	1                  	; +#0E  RESERVE SECTORS
+.FAT_NUM			BYTE	2                  	; +#10  AMOUNT FATS
+.F_P_DIR			WORD	112                	; +#11  FILES IN DIRECTORY
+.S_P_D				WORD	1440               	; +#13  ALL SECTORS ON DISK
+.DRIVE_TYPE			BYTE	#F0                	; +#15  Тип устройства
+.S_P_F				WORD	2                  	; +#16  SIZE FAT IN SECTORS
+.S_P_T				WORD	9                  	; +#18  SECTOR PER TRACK
+.HEADS				WORD	2                  	; +#1A  AMOUNT SIDES
+.HIDDEN				DWORD	0                  	; +#1C  HIDDEN SECTORS
+.BPB_BIG_TOTAL_SECTORS_L	WORD	0                  	; +#20  BIG TOTAL SECTOR Low word
+.BPB_BIG_TOTAL_SECTORS_H	WORD	0                  	; +#22  BIG TOTAL SECTOR High word
+.BPB_PHISICAL_DRIVE_NUMBER	WORD	#80                	; +#24  PHISICAL DRIVE NUMBER
+.BPB_EXT_BOOT_RECORD_SIGNATURE	BYTE	#29                	; +#26  EXTENDED BOOT RECORD SIGNATURE
+.BPB_SERIAL_NUMBER		DWORD	0                  	; +#27  VOLUME SERIAL NUMBER
+.BPB_LABEL			TEXT	11,	{"NO NAME"," "} ; +#2B  DISK LABEL
+.ID_FAT				TEXT	8,	{"FAT16"," "}	; +#36  FILE SYSTEM ID (BPB_FS_ID) ;!TODO detect fat type by clusters!
 ;.BOOT_CODE			BLOCK   448,0			; +#3E  boot loader's code
 ;.MBR_PARTITION_TABLE		BLOCK	4*16			; +#1BE table = 4x16 bytes
 ;.MBR_SIGNATURE			WORD	#AA55			; +#1FE Signature
  ENDS
 ;
 
- STRUCT	_sMBR_PARTITION_TABLE, #01BE	; MBR: Offset of partition table in the MBR
-Record_1			_sMBR_PARTITION_RECORD		; +#01BE
-Record_2			_sMBR_PARTITION_RECORD		; +#01CE
-Record_3			_sMBR_PARTITION_RECORD		; +#01DE
-Record_4			_sMBR_PARTITION_RECORD		; +#01EE
-MBR_SIGNATURE			WORD	#AA55			; +#01FE
- ENDS
-
+;
  STRUCT	_sMBR_PARTITION_RECORD
-isActive			BYTE	0			; +#00
-Start_head			BYTE	0			; +#01
-Start_sector			BYTE	0			; +#02
-Start_cylinder			BYTE	0			; +#03
-FS_ID				BYTE	0			; +#04
-End_head			BYTE	0			; +#05
-End_sector			BYTE	0			; +#06
-End_cylinder			BYTE	0			; +#07
-Start_LBA			DWORD	0			; +#08
-Size_LBA			DWORD	0			; +#0C
+.isActive			BYTE	0			; +#00
+.Start_head			BYTE	0			; +#01
+.Start_sector			BYTE	0			; +#02
+.Start_cylinder			BYTE	0			; +#03
+.FS_ID				BYTE	0			; +#04
+.End_head			BYTE	0			; +#05
+.End_sector			BYTE	0			; +#06
+.End_cylinder			BYTE	0			; +#07
+.Start_LBA			DWORD	0			; +#08
+.Size_LBA			DWORD	0			; +#0C
  ENDS
+;
+
+;
+ STRUCT	_sMBR_PARTITION_TABLE ;, #01BE	; MBR: Offset of partition table in the MBR
+.Record_1			_sMBR_PARTITION_RECORD		; +#01BE
+.Record_2			_sMBR_PARTITION_RECORD		; +#01CE
+.Record_3			_sMBR_PARTITION_RECORD		; +#01DE
+.Record_4			_sMBR_PARTITION_RECORD		; +#01EE
+ ENDS
+;
+
+;
+ STRUCT _sBOOT_SECTOR
+.PARAMS				_sBOOT_SECTOR_PARAMS
+.BOOT_CODE			BLOCK   384,0			; +#3E  boot loader's code
+.PARTITION_TABLE		_sMBR_PARTITION_TABLE
+.MBR_SIGNATURE			WORD	#AA55			; +#01FE
+ ENDS	
 //---------------------------------------------------------------------------
 
 ;