I just purchased and installed TI 10.0 and updated to the latest build, i.e. 4942. I find that 10.0 performs exactly the way 9.0 did, that is, ONLY the SAFE VERSION opens with the boot disk. Selecting the Full version results in the system hanging. If I attempt to restore the Primary partition from within Windows, I am directed to restart which then results in the system hanging again. I'm a bit disappointed.