diff --git a/src/ZX_ROMS/new/SP_TRDOS.bin b/src/ZX_ROMS/new/SP_TRDOS.bin
index 30813fb..cc1a621 100644
Binary files a/src/ZX_ROMS/new/SP_TRDOS.bin and b/src/ZX_ROMS/new/SP_TRDOS.bin differ
diff --git a/src/bios/exp/EXP.asm b/src/bios/exp/EXP.asm
index 4104c66..6723e78 100644
--- a/src/bios/exp/EXP.asm
+++ b/src/bios/exp/EXP.asm
@@ -927,28 +927,39 @@ No_Need_To_Load_ZXROMS:
 ;
 	MODULE Prepare_For_Setup
 
-Set_ALL_Mode:
-	LD A,#FF
-	LD BC,Port_All_Mode
-	OUT (C),A
+Set_ALL_Mode:	LD A,#FF
+		LD BC,Port_All_Mode
+		OUT (C),A
 
 Set_Default_Screen:
-	CALL FN_SYNC.INT_DEF						; set default int
-	ld a,128+4							; !HARDCODE 
-	;ld c,BIOS.FN_SYNC
-	;RST_to_BIOS_18							; set default vsync
-        CALL FN_SYNC							; set default vsync
-Setup_to_RAM:
-	LD HL,Setup_Starter.Start
-	LD DE,COMPILE_ADDR.SETUP_STARTER
-	LD BC,Setup_Starter.Length
-	LDIR
-        
-; на стек кладётся адрес возврата и дальше тащится всякими костылями, чтоб вернуться назад
-	CALL Setup_Starter.Exec                                         ; #C000
-
-	JP ZX_SPECTRUM_MODE                                             ; выход в режим zx spectrum
-
+		CALL FN_SYNC.INT_DEF					; set default int
+		ld a,128+4						; !HARDCODE 
+		;ld c,BIOS.FN_SYNC
+		;RST_to_BIOS_18						; set default vsync
+		CALL FN_SYNC						; set default vsync
+Setup_to_RAM:	LD HL,Setup_Starter.Start
+		LD DE,COMPILE_ADDR.SETUP_STARTER
+		LD BC,Setup_Starter.Length
+		LDIR
+	; на стек кладётся адрес возврата и дальше тащится всякими костылями, чтоб вернуться назад
+		CALL Setup_Starter.Exec					; #C000
+PrepareToZX:	; Setup HDD drives for ZX Spectrum mode
+		DI
+		LD	D,CMOS_CELL.TRDOSmount
+		CALL	CMOS_RD
+		AND	%1010'1010	; маска для 4-х HDD
+		JR	Z,.start_zx
+		; find first good partition
+		;
+		XOR	A
+.loop:		CALL	FN_HDD_PART
+		JR	NC,.start_zx
+		POP	AF
+		INC	A
+		CP	#10
+		JR	C,.loop
+		; выход в режим zx spectrum
+.start_zx:	JP ZX_SPECTRUM_MODE
 	ENDMODULE
 ;***********************************
 ;	Инициализация портов
diff --git a/src/bios/exp/FUNC_4x.ASM b/src/bios/exp/FUNC_4x.ASM
index 00e89b3..27b443f 100644
--- a/src/bios/exp/FUNC_4x.ASM
+++ b/src/bios/exp/FUNC_4x.ASM
@@ -583,7 +583,7 @@ FN_HDD_PART:
 	POP	BC
 	LD	A,SYS_PAGE
 	OUT	(SLOT3),A
-	;e tu
+	;
 	LD	A,B
 	LD	(SYS_PAGE.CURRENT_HDD),A
 	;
@@ -591,7 +591,6 @@ FN_HDD_PART:
 	OUT	(SLOT3),A
 	;
 	CALL	SET_BPB_OFFSET
-	;AND	A
 .exit:	POP	HL
 	POP	BC
 	EI
@@ -852,12 +851,20 @@ SET_BPB_OFFSET:
 .loop:	ADD	HL,DE
 	DJNZ	.loop
 	;
-	LD	A,8
+	LD	A,_sMBR_PARTITION_RECORD.Start_LBA
 	ADD	L
 	LD	L,A
 	LD	DE,SYS_PAGE.HDD_PARTITION_OFFSET
-	LD	C,4
+	LD	C,_sMBR_PARTITION_RECORD.Size_LBA - _sMBR_PARTITION_RECORD.Start_LBA
 	LDIR
+	; [x] 07/07/2024 fix bug with select empty partition record
+	 EX	DE,HL
+	 XOR	A
+	 LD	B,_sMBR_PARTITION_RECORD.Size_LBA - _sMBR_PARTITION_RECORD.Start_LBA
+.loop2:	 DEC	HL
+	 OR	(HL)
+	 DJNZ	.loop2
+	 SUB	1
 	;
 	EX	AF,AF'
 	 OUT	(SLOT3),A
diff --git a/src/bios/exp/FUNC_CMOS.ASM b/src/bios/exp/FUNC_CMOS.ASM
index e3c8c29..fac1e5d 100644
--- a/src/bios/exp/FUNC_CMOS.ASM
+++ b/src/bios/exp/FUNC_CMOS.ASM
@@ -100,4 +100,14 @@ CMOS_TEST:
 	POP DE
 	POP AF
 	SCF
-	RET
\ No newline at end of file
+	RET
+
+; Не портит HL
+; GET_CMOS_VALUE:	LD	A,L
+; 		CALL	CMOS_RD
+; 		AND	H
+; .loop:		RRCA
+; 		RRC	H
+; 		JR	NC,.loop
+; 		RLCA
+; 		RET 
\ No newline at end of file
diff --git a/src/bios/shared/RECOVERY.IMG b/src/bios/shared/RECOVERY.IMG
index 9e7f4fe..4786914 100755
Binary files a/src/bios/shared/RECOVERY.IMG and b/src/bios/shared/RECOVERY.IMG differ
diff --git a/src/bios/shared/includes.inc b/src/bios/shared/includes.inc
index d48d5fd..3773dee 100644
--- a/src/bios/shared/includes.inc
+++ b/src/bios/shared/includes.inc
@@ -4,11 +4,12 @@
  IF Pashalki
 	INCLUDE 'Shared_Includes/structures/EasterSprites.inc'
  ENDIF
+	INCLUDE 'Shared_Includes/structures/FileSystem.inc'
 	INCLUDE 'src/bios/Loader/Loader.asm'                            ; Bitstream loader as macros
 	INCLUDE 'src/bios/shared/CompMacro.asm'                         ; макросы
 	INCLUDE 'Shared_Includes/constants/SP2000.inc'                  ; константы
 	INCLUDE 'Shared_Includes/constants/zx_char_codes.inc'           ; константы
-	INCLUDE 'Shared_Includes/constants/zx_vars.inc'           ; 
+	INCLUDE 'Shared_Includes/constants/zx_vars.inc'			; 
 	INCLUDE 'Shared_Includes/macroses/macros.z80'
 	INCLUDE 'src/bios/ROM/MEM_MAP.inc'                              ; карта памяти
 	INCLUDE 'src/bios/shared/VERSION.inc'                           ; Версия EXP и ROM