I attempted to run Disk Defragmentor several times recently, and it never
completed - even after 19 hours! To make matters worse, rather than gaining
space on my 400 GB hard drive, I lost a total of 20 percent. I also tried
running it in safe mode, but that didn't work. I tried to do a System
Restore, and it failed.
What happened to my hard drive space? How do I recover it?