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:

  1. Download the latest version of Defraggler in ZIP format.
  2. Unzip the ZIP file into a folder.
  3. Copy the contents of the ZIP file to a USB stick.
  4. Create a dummy portable.dat file in the folder. You can do this by right-clicking a blank area in the folder, and then clicking New, and then Text Document. Replace the New Text Document.txt file name with portable.dat and then press Enter. You will be prompted to confirm the file extension change. Click Yes.

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.

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