When using recovery discs, I am asked to insert the supplemental disc. I do so and am asked if I want to back up. I say no and it tells me my hard drive partition is smaller than it was before and it doesn't allow me to install it. This has happened every time I've tried to do this and even did so with a new hard drive I purchased and had to use my recovery discs. If I say I want to back up, then it takes me hours and many discs to do, so and have no desire to take that time to do so. Why would my partition be smaller than it was to begin with and what exactly is on the supplemental disc that my system does not have because I can't use it as my machine says?