diff --git a/BOOT/DSSBOOT.ASM b/BOOT/DSSBOOT.ASM
index 1a71a5a..b28a211 100644
--- a/BOOT/DSSBOOT.ASM
+++ b/BOOT/DSSBOOT.ASM
@@ -576,22 +576,50 @@ GET_BPB:	XOR	A
 		;LD	H,A
 		;LD	L,A
 		;LD	(FatBuffer.CacheBlock),HL
+
+
+
 		; A = 0
-		LD	DE,(FatBuffer.SectorsPerFAT_H)
-		LD	D,A
+		; LD	DE,(FatBuffer.SectorsPerFAT_H)
+		; LD	D,A
+		; LD	HL,(FatBuffer.SectorsPerFAT_L)
+		; ; DE:HL = SectorsPerFAT
+		; ;
+		; LD	A,(BOOT_BUFFER + BOOT_SECTOR.Number_of_FATs)
+		; DEC	A
+		; LD	B,A
+		; JR	Z,.loop_mul_end
+
+
+
+		; A = 0
+		LD	HL,(FatBuffer.SectorsPerFAT_H)
+		LD	H,A
+		LD	D,H
+		LD	E,L
+		;EX	DE,HL
+		EXX
 		LD	HL,(FatBuffer.SectorsPerFAT_L)
-		; DE:HL = SectorsPerFAT
-		;
+		LD	D,H
+		LD	E,L
+		; HL':HL = SectorsPerFAT
+		; DE':DE = SectorsPerFAT
 		LD	A,(BOOT_BUFFER + BOOT_SECTOR.Number_of_FATs)
-		LD	B,A
 		DEC	A
-		JR	Z,.loop_mul_end
+		LD	B,A
+		;
+		CALL	NZ,ALL_SECTORS_PER_FATs
+		EXX	
+		 PUSH	HL
+		EXX	
+		POP	DE
+		; DE:HL - sectors per FATs
 		; .Number_of_FATs * .SectorsPerFAT
-.loop_mul:	ADD	HL,HL
-		EX	DE,HL
-		ADC	HL,HL
-		EX	DE,HL
-		DJNZ	.loop_mul
+; .loop_mul:	ADD	HL,HL
+; 		EX	DE,HL
+; 		ADC	HL,HL
+; 		EX	DE,HL
+; 		DJNZ	.loop_mul
 .loop_mul_end:	; .DirSizeInSectors + .Number_of_FATs * .SectorsPerFAT
 		LD	B,0
 		LD	A,(FatBuffer.DirSizeInSectors)
@@ -669,15 +697,18 @@ GET_BPB:	XOR	A
 		 LD	HL,(FatBuffer.FAT1_SEC_L)
 		 LD	DE,(FatBuffer.SectorsPerFAT_L)
 		 AND	#0F
-		 JR	Z,.first_FAT_active
+;		 JR	Z,.first_FAT_active
+;		 LD	B,A
+; 		;
+; .fat_calc_loop:	 ADD	HL,DE
+; 		EXX
+; 		ADC	HL,DE
+; 		EXX
+; 		 DJNZ	.fat_calc_loop
+		;
 		 LD	B,A
-		;
-.fat_calc_loop:	 ADD	HL,DE
-		EXX
-		ADC	HL,DE
-		EXX
-		 DJNZ	.fat_calc_loop
-		;
+		 CALL	NZ,ALL_SECTORS_PER_FATs
+		 ;
 .first_FAT_active:
 		 LD	(FatBuffer.FAT1_SEC_L),HL
 		EXX
@@ -700,6 +731,18 @@ GET_BPB:	XOR	A
 		;
 
 
+; HL:HL' - first FAT sector
+; DE:DE' - sectors per one FAT
+;      A - number of FATs (counts from 0)
+ALL_SECTORS_PER_FATs:
+		ADD	HL,DE
+		EXX
+		 ADC	HL,DE
+		EXX
+		DJNZ	ALL_SECTORS_PER_FATs
+		RET
+
+
 ;NSECTOR:
 ; in:	HL':HL - CLUSTER
 ; out:	HL:IX  - SECTOR
diff --git a/BOOT/boot.asm b/BOOT/boot.asm
index 78c107b..9e4ff3b 100644
--- a/BOOT/boot.asm
+++ b/BOOT/boot.asm
@@ -96,7 +96,7 @@
 
 ; версия программы
 major_version		equ	3			; ст. номер версии
-minor_version		equ	0			; мл. номер
+minor_version		equ	1			; мл. номер
 ;;
 SECTORS_OF_LOADER	EQU	4			; секторов загрузчика
 .IN_BPB			EQU	1
diff --git a/DSS/FS/FAT.asm b/DSS/FS/FAT.asm
index b8dbe6b..4b6a5b3 100644
--- a/DSS/FS/FAT.asm
+++ b/DSS/FS/FAT.asm
@@ -708,10 +708,21 @@ SAVEDIR:	;!TODO optimize
 FAT_BPB:	LD	A,(CORE_BUFFERS.SECTOR_BUFFER + BOOT_SECTOR.DRIVE_TYPE)
 		CP	#F0
 		JP	C,RD_BPB.UnknownBPB
-		;
+	; PREPARE
 		XOR	A
 		LD	(.UsesVarsFAT32),A
 		;
+		;EXX	
+		 LD	H,A
+		 LD	L,A
+		 LD	D,A
+		 LD	E,A
+		EXX
+		;[ ] fat32 
+		 LD	B,A
+		 LD	C,A
+		 LD	(CORE_BUFFERS.FS_Buffer.SectorsPerFAT_H),A					; [ ] fat32
+		;
 		LD	HL,(CORE_BUFFERS.SECTOR_BUFFER + BOOT_SECTOR.BytesPerSector)
 		LD	(CORE_BUFFERS.FS_Buffer.BytesPerSector),HL
 		LD	A,(CORE_BUFFERS.SECTOR_BUFFER + BOOT_SECTOR.SectorsPerCluster)
@@ -721,22 +732,12 @@ FAT_BPB:	LD	A,(CORE_BUFFERS.SECTOR_BUFFER + BOOT_SECTOR.DRIVE_TYPE)
 		LD	(CORE_BUFFERS.FS_Buffer.FAT1_SEC_L),HL  ; low word first sector FAT #1
 		LD	(CORE_BUFFERS.FS_Buffer.FAT2_SEC_L),HL  ; low word first sector FAT #2
 		;[ ] fat32 
-		 XOR	A
-		 LD	B,A
-		 LD	C,A
 		 LD	(CORE_BUFFERS.FS_Buffer.FAT1_SEC_H),BC  ; high word first sector FAT #1	; [ ] fat32
 		 LD	(CORE_BUFFERS.FS_Buffer.FAT2_SEC_H),BC  ; high word first sector FAT #1	; [ ] fat32
 		 LD	(CORE_BUFFERS.FS_Buffer.RootDirFirstSector_H),BC
-		 LD	(CORE_BUFFERS.FS_Buffer.SectorsPerFAT_H),A					; [ ] fat32
 		 ;LD	(CORE_BUFFERS.FS_Buffer.END_CHAIN_CLUSTER_H),BC					; [ ] fat32 reset variables
 		;
 		;
-		EXX	
-		 LD	H,A
-		 LD	L,A
-		 LD	D,A
-		 LD	E,A
-		EXX
 		LD	DE,(CORE_BUFFERS.SECTOR_BUFFER + BOOT_SECTOR.SectorsPerFAT16)
 		LD	A,E
 		OR	D
@@ -917,20 +918,32 @@ FAT_BPB:	LD	A,(CORE_BUFFERS.SECTOR_BUFFER + BOOT_SECTOR.DRIVE_TYPE)
 		; A = 0
 		LD	HL,(CORE_BUFFERS.FS_Buffer.SectorsPerFAT_H)
 		LD	H,A
-		EX	DE,HL
+		LD	D,H
+		LD	E,L
+		;EX	DE,HL
+		EXX
 		LD	HL,(CORE_BUFFERS.FS_Buffer.SectorsPerFAT_L)
-		; DE:HL = SectorsPerFAT
-		;
+		LD	D,H
+		LD	E,L
+		; HL':HL = SectorsPerFAT
+		; DE':DE = SectorsPerFAT
 		LD	A,(CORE_BUFFERS.SECTOR_BUFFER + BOOT_SECTOR.Number_of_FATs)
-		LD	B,A
 		DEC	A
-		JR	Z,.loop_mul_end
-		; .Number_of_FATs * .SectorsPerFAT
-.loop_mul:	ADD	HL,HL
-		EX	DE,HL
-		ADC	HL,HL
-		EX	DE,HL
-		DJNZ	.loop_mul
+		LD	B,A
+;		JR	Z,.loop_mul_end
+;		; .Number_of_FATs * .SectorsPerFAT
+; .loop_mul:	ADD	HL,HL
+; 		EX	DE,HL
+; 		ADC	HL,HL
+; 		EX	DE,HL
+; 		DJNZ	.loop_mul
+		;
+		CALL	NZ,ALL_SECTORS_PER_FATs
+		EXX	
+		 PUSH	HL
+		EXX	
+		POP	DE
+		; DE:HL - sectors per FATs
 .loop_mul_end:	; .DirSizeInSectors + .Number_of_FATs * .SectorsPerFAT
 		LD	B,0
 		LD	A,(CORE_BUFFERS.FS_Buffer.DirSizeInSectors)
@@ -1005,21 +1018,25 @@ FAT_BPB:	LD	A,(CORE_BUFFERS.SECTOR_BUFFER + BOOT_SECTOR.DRIVE_TYPE)
 		LD	DE,(CORE_BUFFERS.FS_Buffer.SectorsPerFAT_H)
 		LD	D,0
 		EXX
-		LD	HL,(CORE_BUFFERS.FS_Buffer.FAT1_SEC_L)
-		LD	DE,(CORE_BUFFERS.FS_Buffer.SectorsPerFAT_L)
-		AND	#0F
-		JR	Z,.first_FAT_active
-		LD	B,A
+		 LD	HL,(CORE_BUFFERS.FS_Buffer.FAT1_SEC_L)
+		 LD	DE,(CORE_BUFFERS.FS_Buffer.SectorsPerFAT_L)
+		 AND	#0F
 		;
-.fat_calc_loop:	ADD	HL,DE
-		EXX
-		 ADC	HL,DE
-		EXX
-		DJNZ	.fat_calc_loop
+; 		JR	Z,.first_FAT_active
+; 		LD	B,A
+; 		;
+; .fat_calc_loop:	ADD	HL,DE
+; 		EXX
+; 		 ADC	HL,DE
+; 		EXX
+; 		DJNZ	.fat_calc_loop
 		;
+		 LD	B,A
+		 CALL	NZ,ALL_SECTORS_PER_FATs
+		 ;
 .first_FAT_active:
-		LD	(CORE_BUFFERS.FS_Buffer.FAT1_SEC_L),HL
-		LD	(CORE_BUFFERS.FS_Buffer.FAT2_SEC_L),HL
+		 LD	(CORE_BUFFERS.FS_Buffer.FAT1_SEC_L),HL
+		 LD	(CORE_BUFFERS.FS_Buffer.FAT2_SEC_L),HL
 		EXX
 		LD	(CORE_BUFFERS.FS_Buffer.FAT1_SEC_H),HL
 		LD	(CORE_BUFFERS.FS_Buffer.FAT2_SEC_H),HL
@@ -1158,6 +1175,17 @@ SectorToCluster:
 		JP	.loop	
 ;
 
+; HL:HL' - first FAT sector
+; DE:DE' - sectors per one FAT
+;      A - number of FATs (counts from 0)
+ALL_SECTORS_PER_FATs:
+		ADD	HL,DE
+		EXX
+		 ADC	HL,DE
+		EXX
+		DJNZ	ALL_SECTORS_PER_FATs
+		RET
+
 ; DOS_X_Error:
 ; .UnknownBPB:	LD	A,DSS_Error.sys.UNKNOWN_FORMAT
 ; 		SCF
diff --git a/DSS/build.txt b/DSS/build.txt
index 56a6051..d8263ee 100644
--- a/DSS/build.txt
+++ b/DSS/build.txt
@@ -1 +1 @@
-1
\ No newline at end of file
+2
\ No newline at end of file
diff --git a/Shared_Includes b/Shared_Includes
index 1dabd78..4da18d5 160000
--- a/Shared_Includes
+++ b/Shared_Includes
@@ -1 +1 @@
-Subproject commit 1dabd783c85be491b704d038f9efabbaf8fe697e
+Subproject commit 4da18d54c12e0f2ff4183be7a1cbf5882da1bd4f