To start with how did you abort Defraggler? Is you drive now showing much less space available than before?
You can always 'Stop' a defrag if you think it's taking too long - but you should do it properly and after clicking 'Stop' let Defraggler finish what it is currently working on and tidy up before closing it.
(If you have aborted defraggler in the wrong way, that is if it was stoppped by force or by a crash, then it may have left a lot of temporary files behind).
A 2 TB HDD is going to take a long time to defragment using Defragglers default options.
That's just a consequence of todays much larger drives.
But keep reading because you can change how you use Defraggler to do things much more quickly.
If you have aborted and started again then the standard options are going to take (almost) as long as the first time.
That's because the standard options are not just 'defragmenting' files (which has already been done, although there will be some new bits to do), but also <em>'consolidating' the whole disc</em> - and it's that consolidation that takes the time.
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I really dont get how defraggler works.
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I'll try to explain that - Because as said you can speed things up if you know just what defragmentng is, and what Defraggler is doing.
To start with it depends on just what you (or the defragmenter app) mean by defragmenting.
There are two things that are commonly called 'defragmenting', but they are very different and one takes a lot more resources/time than the other.
'Defragmentation' proper means getting you files into one piece each, so they can be read slightly faster.
'<strong>Consolidation</strong>' is also commonly called defragmenting and means getting your files into the smallest number of possible clusters on the disc, which may (will) actually fragment the files themselves to 'fit them in' to the smallest number of clusters. That's the one that takes more resources/time, and it's not realy needed on todays larger discs.
When most people talk about defragmenting they are actually thinking about consolidation, that's simply because defragmenting software has been (wrongly) calling it that for years, but user needs have changed over time as discs got bigger so the difference between the two is more important now.
By default Defraggler does a combination of both consolidation and defragmentation, but you can also specify one or the other.
With a large drive it's a good idea to do a full Defrag (defrag & consolidate) once or maybe twice to get the disck in order, but then after that only to do 'file only' defrags.
(You might want to do another consolidate when you have done some uninstalling of things).
To do a 'file only' defragment in Defraggler:
Open defraggler and analyse the drive.
Click on 'View Files' or click on the 'Files' tab.
Select the tickbox at the top of the list to select everything found.
Click on 'Defrag Checked'.
That will just defragment the files without trying to consolidate the whole drive.
So it will be quicker and use less resources.
Note that when doing a files only defrag it is not unusual for it to finish with a 'Defrag Aborted' message.
That's because some file(s) have been opened/changed between analyzing and defragmenting, so for safety it has been skipped, the rest of the files have been defragged.
Like any tool that can be used in multiple ways what you get out of Defraggler depends on knowing how to use it in the best way for you.
In your place I'd let the current run complete, if it hasn't already.
Then I'd do a files only defrag so you can see the difference in time taken.
Then, if you want to, do an new Ananlyze and post a screenshot of the drive map after doing that so that we can comment on how it looks.