Running Defraggler from a USB drive
You can install Defraggler to and run it from a USB drive.
Why would you use this? Maybe your work PC doesn't allow you to install new software, or, you want to help out a friend by defragging their PC, you can bring over Defraggler without having to install anything on their computer.
To install Defraggler to a USB drive:
To run Defraggler from the USB drive, double-click the Defraggler.exe file in the Defraggler folder.
Note: If the portable.dat file is present in the same folder on the USB drive as Defraggler.exe, Defraggler will create and use defraggler.ini in that folder for its settings. Otherwise, it will use its own default settings. The portable installation of Defraggler will never use or modify any settings in the Windows Registry.