Fortunately, I had used this .tib previously to install MCE as a test to a spare drive, and it seemed to work just fine, but when I just tried to use it again to recover to a new harddrive, TI said that it was corrupt. I guess that all is not lost, since I can creat another image from the test installation, but I'm very curious as to why a good file can go bad? It has never been defragged or touched in any other fashion. The only thing that I can think of is that I eneded up having to move some other .tibs into the same partition with it, leaving only 9% free space, but that shouldn't have been a factor. What ever did go wrong, I would like to avoid the same situation again...any ideas?