diff --git a/releng/releng_build_jigdo b/releng/releng_build_jigdo
index eaa5ccb4..957ebc68 100755
--- a/releng/releng_build_jigdo
+++ b/releng/releng_build_jigdo
@@ -15,8 +15,11 @@ RES="${IMG}.iso ${IMG}.new ${IMG}.md5 ${IMG}.jigdo ${IMG}.template"
 # remove cruft from previous runs
 # rm -f ${RES}
 
+# grab an MBR
+# dd if=some.iso bs=1K count=32 of=somembr.sysarea
+
 # create FAT partition
-# /sbin/mkfs.msdos -n Bla -C test.fat 8192
+# /sbin/mkfs.msdos -n Bla -C fatpart.fat 8192
 
 # create MD5 list in base64 format
 jigdo-gen-md5-list ${DIR} > ${IMG}.md5
@@ -31,8 +34,14 @@ CMD="${XOR} \
  -J -joliet-long \
 "
 # boot section
-#if [ "${4}" ]; then
-#CMD+=
+#if [ "${5}" -a "${6}" ]; then
+#CMD+=\
+# -b boot/isolinux/isolinux.bin \                     # $5
+# -c boot/boot.cat \                                  # $6
+# -no-emul-boot -boot-load-size 4 -boot-info-table \
+# -isohybrid-mbr somembr.sysarea \                    # TODO: figure out where to grab one
+# -partition_offset 16 \
+# -append_partition 2 0x01 fatpart.fat \
 #fi
 
 # jigdo section