System: XP(SP3), 120GB hard-drive (112GB usable). On 22Dec2015 downloaded and installed latest Eraser build (after some difficulty) and ran with default settings to erase free-space. After about 3 hours running program seemed to be hung-up with about 3/4 done on progress bar; I let the program continue to run overnight. The result is that all free-space is now shown as fragmented. I had about 75GB(?) of free space before running Eraser and now I have about 800MB free space with the majority of files showing as fragmented. In response, I ran 3 other defrag programs but they all report too little free space necessary to run. Now what do I do?