diff --git a/DSS/API/MkDir.asm b/DSS/API/MkDir.asm
index bd3c466..6bf4046 100644
--- a/DSS/API/MkDir.asm
+++ b/DSS/API/MkDir.asm
@@ -168,18 +168,6 @@ MKDIR:
 		PUSH	HL			; ст. разряд
 		PUSH	IX			; номер лог. сектора
 		;
-			; IN	A,(SLOT3)
-			; PUSH	AF
-			; IN	A,(SLOT0)
-			; OUT	(SLOT3),A
-			; ;
-			; LD	A,(CORE_BUFFERS.FS_Buffer.DRIVE)
-			; LD	DE,CORE_BUFFERS.SECTOR_BUFFER+#C000
-			; LD	BC,1*256 + Dss.DRV.Write
-			; RST	ToDSS.DRV
-			; ;
-			; POP	AF
-			; OUT	(SLOT3),A
 		CALL	WRITE_SECTOR
 		; !FIXIT нет проверки на ошибку
 		;
diff --git a/DSS/DOS_Proc.asm b/DSS/DOS_Proc.asm
index 21dc66b..1bc60db 100644
--- a/DSS/DOS_Proc.asm
+++ b/DSS/DOS_Proc.asm
@@ -183,9 +183,9 @@ TMPNAME:	DZ '            '	; 12 
 ;----------------------------------------------------------------------;
 ; IN:	A - drive number
 OPENDSK:	;!TEST DRV.Open обход R10
-		 LD	C,A
+		 LD	B,A
 		 LD	A,(CORE_BUFFERS.FS_Buffer.DRIVE)
-		 CP	C
+		 CP	B
 	 	 JR	NZ,.open
 		 PUSH	BC
 		 LD	C,Dss.DRV.MediaCheck
@@ -194,7 +194,7 @@ OPENDSK:	;!TEST DRV.Open 
 		 JR	Z,.exit
 		 JR	.skip_open	;!FIXIT когда DRV.MediaCheck и DRV.Open будут отличаться
 		 ;
-.open:		 LD	A,C
+.open:		 LD	A,B
 		;
 .force: 	PUSH	AF
 		LD	C,Dss.DRV.Open
diff --git a/DSS/DSS-MAIN.ASM b/DSS/DSS-MAIN.ASM
index af5b6c7..a3057e0 100644
--- a/DSS/DSS-MAIN.ASM
+++ b/DSS/DSS-MAIN.ASM
@@ -607,8 +607,8 @@ F_START: DI
 	 ;LD	A,H
 	 ;LD	A,0
 	;
-	LD	B,1
-	CALL	BOOTDSK
+	;LD	B,1
+	CALL	BOOTDSK.SET
 	RET	C
 	;
 	EI