From: H. Peter Anvin <hpa@zytor.com>
Date: Wed, 11 Jul 2007 22:45:49 +0000 (-0700)
Subject: Shave two more bytes off the MBR
X-Git-Tag: syslinux-3.52-pre4~19
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1d5d9461937c5f6a117012ea5fdafbf585a1d6fe;p=profile%2Fivi%2Fsyslinux.git

Shave two more bytes off the MBR
---

diff --git a/mbr/mbr.S b/mbr/mbr.S
index cb8f6dc..7597d79 100644
--- a/mbr/mbr.S
+++ b/mbr/mbr.S
@@ -194,11 +194,10 @@ scan_partition_table:
 	movb	$4, %cl		/* cx == 0 here */
 7:
 	movb	4(%di), %al
-	cmpb	$0x05, %al	/* MS-DOS extended */
+	cmpb	$0x0f, %al	/* 0x0f = Win9x extended */
 	je	8f
-	cmpb	$0x0f, %al	/* Win9x extended */
-	je	8f
-	cmpb	$0x85, %al	/* Linux extended */
+	andb	$~0x80, %al	/* 0x85 = Linux extended */
+	cmpb	$0x05, %al	/* 0x05 = MS-DOS extended */
 	jne	9f
 
 	/* It is an extended partition.  Read the extended partition and