Defraggler has a Failure on showing disk map after Analyzing, this is the screeshot of the same USB PENDRIVE before and after of analyzing the unit. It shows a lot of small spaces than with other defrag softwares doesn't appears. It seems this only occurs in alwais the same unit, it seems doesn't care what usb connector I use.
- If this only happens with this one USB external drive then I would assume that there's some software that doesn't allow Defraggler to properly do its job on that one USB drive. Perhaps there is some Western Digital software running that is "interfering" with Defraggler ?
- Another possibility is that Defraggler has a (slightly) different view on how to display the empty spaces on that drive than other defrag programs.
- Personally, I wouldn't be too worried as long as the USB drive continues to function well.