I want to install some of my programs to another hard drive because of lack of space, but I have a question about backing up. I use a backup program called Acronis, which I use to make a copy of my OS hard-drive. I am wondering if i back up as i normally do and place programs on a second drive, if i will have problems if say the programs I install corrupt in some way? What I mean is do programs normally corrupt in the registry, or can they corrupt anywhere? I don't want to have to make a backup of my second HD if i don't need to, I would prefer to save space.