The t430 ISO images are slightly larger than all the other ones, so the hdd image fix does not apply. Fix this by selecting the patch to use based on the size of the hdd image

Makefile

@@ -207,7 +207,7 @@ GETELTORITO := ./geteltorito
 # extract the DOS boot image from an iso (and fix it up so qemu can boot it)
 %.img: %.iso
 	$(GETELTORITO) -o $@ $<
-	./hexpatch.pl $@ fix-hdd-image.patch
+	./hexpatch.pl $@ fix-hdd-image-$(shell stat -c %s $@).patch
 	$(call build_info,$<.bat)
 
 # $1 is the lenovo named iso

fix-hdd-image-33554432.patch

@@ -5,6 +5,8 @@ LBA to access the disk, this confuses it and causes it to fail.
 This patch changes the partition end head/cylinder, which is all that is
 needed to make the MBR happy
 
+This patch is for disk images with 65536 sectors (33554432 bytes)
+
 @@ fix partition table @@
  00000190  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
  000001a0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|

fix-hdd-image-38797312.patch

@@ -0,0 +1,18 @@
+Qemu does not support disk images with more than 16 heads, but the lenovo
+disk image is created with 64 heads.  Since the MBR they used does not use
+LBA to access the disk, this confuses it and causes it to fail.
+
+This patch changes the partition end head/cylinder, which is all that is
+needed to make the MBR happy
+
+This patch is for disk images with 75776 sectors (38797312 bytes)
+
+@@ fix partition table @@
+ 00000190  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
+ 000001a0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
+ 000001b0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 80 01  |................|
+-000001c0  01 00 04 3f 20 24 20 00  00 00 e0 27 01 00 00 00  |...? . .........|
++000001c0  01 00 04 0f 20 90 20 00  00 00 e0 27 01 00 00 00  |.... . .........|
+ 000001d0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
+ 000001e0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
+ 000001f0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 55 aa  |..............U.|