diff --git a/src/ZX_ROMS/new/SP_TRDOS.bin b/src/ZX_ROMS/new/SP_TRDOS.bin
index 5a6e7c8..8267a4f 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 43a2ba3..3382012 100644
--- a/src/bios/exp/EXP.asm
+++ b/src/bios/exp/EXP.asm
@@ -867,6 +867,7 @@ PrepareToZX:	;CALL	init_zx_roms
 		; find first good partition
 		;
 
+	; ç¨á⪠ ¯¥à¥¬¥­­ëå ZX HDD
 		IN	A,(SLOT3)
 		EX	AF,AF
 		LD	A,SYS_PAGE
@@ -877,9 +878,15 @@ PrepareToZX:	;CALL	init_zx_roms
 		LD	L,A
 		LD	(SYS_PAGE.CURRENT_DIR_SEC_L),HL
 		LD	(SYS_PAGE.CURRENT_DIR_SEC_H),HL
+		DEC	A
+		LD	(SYS_PAGE.CURRENT_HDD),A
+		LD	(SYS_PAGE.CURRENT_DIR_DRIVE),A
+		LD	(SYS_PAGE.CURRENT_DIR_DRIVE_COPY),A
+		;
 		EX	AF,AF
 		OUT	(SLOT3),A
 		EX	AF,AF
+	;
 
 .loop:		CALL	FN_HDD_PART
 		JR	NC,.start_zx
diff --git a/src/bios/exp/FUNC_SYS.ASM b/src/bios/exp/FUNC_SYS.ASM
index f9a5cf9..bfb76b9 100644
--- a/src/bios/exp/FUNC_SYS.ASM
+++ b/src/bios/exp/FUNC_SYS.ASM
@@ -185,7 +185,7 @@ INIT_SYS_ALL:
 	DI
 	; LD	HL,#8000
 	; LD	DE,#8001
-	; LD	(HL),0
+	; LD	(HL),#FF
 	; LD	BC,#3FFF
 	; LDIR
 	;
@@ -198,7 +198,16 @@ INIT_SYS_ALL:
 	LD	DE,SYS_PAGE.ID_FLAG - #4000
 	LD	BC,ID_SPRINTER.Record1_Size
 	LDIR
-        
+	; ç¨á⪠ ¯¥à¥¬¥­­ëå ZX HDD
+	XOR	A
+	LD	H,A
+	LD	L,A
+	LD	(SYS_PAGE.CURRENT_DIR_SEC_L - #4000),HL
+	LD	(SYS_PAGE.CURRENT_DIR_SEC_H - #4000),HL
+	DEC	A
+	LD	(SYS_PAGE.CURRENT_HDD - #4000),A
+	LD	(SYS_PAGE.CURRENT_DIR_DRIVE - #4000),A
+	LD	(SYS_PAGE.CURRENT_DIR_DRIVE_COPY - #4000),A
 	; Disable user IM address in SYS_PAGE
 	 XOR	A
 	 LD	(SYS_PAGE.INT_ID - #4000),A
diff --git a/src/bios/exp/FUNC_ZX.ASM b/src/bios/exp/FUNC_ZX.ASM
index 813ab8a..bcfb84a 100644
--- a/src/bios/exp/FUNC_ZX.ASM
+++ b/src/bios/exp/FUNC_ZX.ASM
@@ -131,7 +131,6 @@ GET_SCORP_RAM:	IN	A,(SLOT3)
 ;°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°;
 
 
-
 ;-----------------------------------------------------------------------;
 ;!TODO § ¤¥©á⢮¢ âì
 GOTO_SPEC:	IN	A,(SLOT3)