As already outlined in the title, Defraggler permanently freezes when I select a drive from the list while defragging a different drive.
I did this while trying to defrag two drives at the same time (I’m not sure this is possible - I was just experimenting).
I can consistently reproduce the bug with the following steps:
Open Defraggler
Click on D: drive
Click on "Defrag"
Click on V: drive
After doing this Defraggler freezes and never comes back. Task Manager still shows 100% D: drive utilization, so I'm guessing the defragmentation still continues in the background even when the GUI is frozen.
I confirm that after clicking Defrag on the D: disk the button is grayed out.
I cannot see whether the Defrag button button is grayed out or not for the other drives, as when I select any other drive from the list the program freezes before the GUI is redrawn.
After I start defragging one drive, the GUI allows me to pick any other of my drives, albeit, I can't actually start another defrag process on any of them as the Defrag button is not available.
But I can go back to the initial drive selected, check its progress, and continue clicking other options in DF happily.
If your HDD uses the NTFS file system "in theory end-tasking Defraggler using Task Manager shouldn't harm your data" since in the background it's using the Microsoft Defrag API.
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If your HDD uses the NTFS file system "in theory end-tasking Defraggler using Task Manager shouldn't harm your data" since in the background it's using the Microsoft Defrag API.
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thanks for replying so fast i appreciate it.
i think the defraggler did his job after one day of running (the HDD is 1 TB) i did not shutdown anything just kept watching the task manager and now i see that there is no activity on my HDD so i think it's safe to end the task from task manager (the Defraggler is still not responding)
maybe i'll wait more i don't have to do anything right now but i don't think that i will use Defraggler again if it's not fixed.
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Windows 10 in particular can be finicky with some <strong>old</strong> 3rd party defrag tools with large capacity HDDs (1TB or bigger).
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my OS is (Windows 8.1 pro) and i have HDDs with capacity more than 1 TB like one is 8 TB and there is more but i only try one HDD.
but i have defrag most of my HDDs before from windows and i can do more than one at the same time but it take a lot of time at the 1st time i did them and i will go back to windows for now.
I signed up to say that I have the very similar or same issue, latest version 2.22 just downloaded from the website, Windows 7x64. I started Defragmentation on D:, it was working fine, after a while I wanted to try to start additional defragmentation on another drive, clicked on it, the GUI switched to that drive but after several seconds stopped responding, I couldn't switch back to D:, as well as click on anything else, the window's just not responding (AppHangB1). But the Task manager shows that Defraggler64.exe still uses CPU and a lot of RAM and the usage changes over time which probably indicates that it's still working? Currently about an hour in this state.