I recently upgraded from a 2.2 to 2.4 Macbook pro and decided to go ahead and copy my windows partition over. I created a partition that matched in size to one on the original machine. After doing this, I used disk utility to copy the partition on to the new machine with the old machine booted into targeted disk mode. Everything is there on the partition, but when I attempt to boot it--it doesn't appear. I am thinking this might have something to do with the MBR not being present somewhere, but wanted to check here before I just reinstalled everything.