We have created images for our three OS: Tiger, Snow Leopard, and Lion. I did this last year and now I can't remember how I made it work with Apple Partition Map and GUID. I created three partitions on an external drive, with the Tiger partition set to Apple Partition Map, and the others as GUID, and restored each one with the new images. Now the Leopard and Lion partitions work, but the Tiger one does not. It shows up in the boot menu but when chosen to boot from, it ends up in the internal drive anyway. I checked when I was creating the partitions to make sure each was the correct type, but it seems like I can't choose a different option (Apple Partition Map or GUID) for each partition. I just can't figure out how I did this last year.