--- bootblock.s~        2007-10-22 23:24:35.000000000 +0200
+++ bootblock.s 2007-10-23 20:36:30.000000000 +0200
@@ -453,3 +453,7 @@ gdt:
        .byte   0x00          # base 23:16
        .word   0xc092        # flags
        .byte   0x00          # base 31:24
+
+bootsig:
+        .org 0x1fe, 0x90                        # boot signature to mark disk as bootable
+        .word 0xaa55
--- cantboot.s~ 2007-10-22 23:24:35.000000000 +0200
+++ cantboot.s  2007-10-24 01:34:13.000000000 +0200
@@ -156,6 +156,9 @@ welcome_msg:
 forever:
        jmp     forever

+bootsig:
+        .org 0x1fe, 0x90                        # boot signature to mark disk as bootable
+        .word 0xaa55