Describe PMBR in terms of syslinux GPT extension.

gpt.h

Index: gpt.h
diff --git a/gpt.h b/gpt.h
index 3af9f8d9108e99a6db72c63a657677e8f6e8fcf0..108dc2eeda85a3217285ecf1a84139bb12e38197 100644
--- a/gpt.h
+++ b/gpt.h
@@ -58,7 +58,11 @@ struct mbr_part {
 };
 
 struct mbr {

[tedbo, 2010/03/12 22:32:48]

The original struct represented a generic MBR with up to 446 byes of code data.
The new struct is specific to the syslinux GPT new protocol (as was the code to
make it bootable in boot.c). Maybe add a comment here that explains that this is
specific to the Syslinux GTP MBR boot protocol?

-	uint16_t	mbr_code[223];
+	uint8_t	        mbr_code[424];
+        uuid_t          boot_guid;
+        uint32_t        disk_id;
+        uint16_t        magic_number;
+#define MBR_MAGIC       0x9A1D
 	struct mbr_part	mbr_part[4];
 	uint16_t	mbr_sig;
 #define	MBR_SIG		0xAA55