Hi, I have left this program running all afternoon. Nothing has updated except the "Used space" going up and down randomly. At one point earlier today i had to completely restart as it stopped responding for no reason (although I hate this term in technology, there is always a reason!) My PC Specs are here before anything:
I have noticed from your screen shot your primary partition (OS C:) current usage stands at 743.2 (87%). That is a lot of files.
The first thing that Defraggler does is build a Index of ALL the files on the partition you want to Defrag.
Now according to, number of files and Index building time ratio, the more files you have the longer it will take to build the Index of ALL the files. The less files you have the faster the Index building process takes.
Just give it time and do not open and close applications while trying to Defrag the partition. As this could delay the building process and in some cases corrupt the file being defrag.
Something that you can try if you haven't already.
Setup CCleaner and run it, this will remove all junk files lessening the amount of files to be Indexed.
I have noticed from your screen shot your primary partition (OS C:) current usage stands at 743.2 (87%). That is a lot of files.
The first thing that Defraggler does is build a Index of ALL the files on the partition you want to Defrag.
Now according to, number of files and Index building time ratio, the more files you have the longer it will take to build the Index of ALL the files. The less files you have the faster the Index building process takes.
Just give it time and do not open and close applications while trying to Defrag the partition. As this could delay the building process and in some cases corrupt the file being defrag.
Something that you can try if you haven't already.
Setup CCleaner and run it, this will remove all junk files lessening the amount of files to be Indexed.
Thanks for the reply, this seems to have worked, after ~4 days of leaving it running, it has seemed to finally complete. Well, it is at 99%, but only has about 40 minutes.
and to aid the process further, running DF with the PC in Safe Mode should give even faster results as background tasks will not be running.
Thanks for that tip, i will definitely keep this in mind for next time.