diff --git a/kern/i386/pc/startup.S b/kern/i386/pc/startup.S
index 18f61d8..a50977c 100644
--- a/kern/i386/pc/startup.S
+++ b/kern/i386/pc/startup.S
@@ -639,13 +639,46 @@ FUNCTION(grub_chainloader_real_boot)
 
 	/* set up to pass boot drive */
 	popl	%edx
+	movl	%edx, %edi
 
 	/* ESI must point to a partition table entry */
 	popl	%esi
 
+
 	call	prot_to_real
 	.code16
+
+	push	%dx
+	call	hex_out
+	push	%di
+	call	hex_out
+
 	ljmp	$0, $GRUB_MEMORY_MACHINE_BOOT_LOADER_ADDR
+
+hex_out:
+	pushw	%bp
+	movw	%sp, %bp
+	pushaw
+	movb	$0xE, %ah
+ 	movw	$7, %bx
+	movw	$4, %cx
+	movw	4(%bp), %dx
+1:
+	rol	$4, %dx
+	movb	%dl, %al
+	andb	$0xF, %al
+	cmpb	$10, %al
+	jb	2f
+	subb	$('0'-'A'+10), %al
+2:
+	addb	$'0', %al
+	int	$0x10
+	loop	1b
+	movb	$' ', %al
+	int	$0x10
+	popaw
+	popw	%bp
+	ret	$2
 	.code32
 
 #include "../loader.S"