Most people who start a thread in the forum are only dealing with the problems they had with the program. The fact there were so many problems posted made me anxious about getting and using the program. However, after looking at the manuals for several of these types of programs--and after Tech Support said the program should do what I needed to do--I went ahead and tried it and it worked perfectly for me. So I thought I should provide a positive posting about the product. I have a Sony Vaio computer that shipped with a 106GB HD partioned into about 13GB for the C drive and about 93GB for the D drive (to be used for video recording and editing). I had about filled up the C drive with only 1.4GB (11% remaining) space left and needed to install two large suites of programs that take up about 4GB. I had cleaned off all I could from the C drive, defragged, etc., but couldn't squeeze any more out. So, after checking several programs, I decided to try Disk Director 10 Suite. With a lot of fear and trepidation I backed up the C drive and ran the program. The clear interface (one of the things that attracted me to the program over the competition) made it simple to drag the bars to adjust the re-allocation of space from the D drive to the C drive. The program worked perfectly and in a few minutes I had 38GB on the C drive and 68GB on the D drive. I had no problems with the re-partitioned C drive and got all the space I needed to install the suites and have room to grow.