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O&O Defrag – Professional Disk Defragmentation Software

by  /  June 5, 2014  /


O&O Defrag can be used to not only defragment your hard drives or partitions, but also optimize your computer’s overall performance.

It has a very clean and easy to use interface. Once launch O&O Defrag, you can see a ribbon bar with all possible operations you can do, a list of available local drives, as well as several tabs such as cluster view, history of fragmentation, drive status, jobs, reports, and file status.

O&O Defrag provides users with a 1 click defragmentation feature to maximum your PC performance, they say, to gain performance up to 100% is not uncommon. After the disk defragmentation, users can get a before-and-after defrag contrast summary to let you know clearly what happens on your selected drive.

What Can O&O Defrag Do

Defrag your fragmented hard drives with a single click of the button.
Free up your disk space.
Increase your system performance.
Support to run automatic disk defragmentation in the background.

General Information of O&O Defrag

Software: O&O Defrag
Operating System: Windows XP, Windows Vista, Windows 7, Windows 8, Windows 8.1 (32-bit and 64-bit)
Language: English, German
Official Webiste:
Download: Free download from official website

O&O Defrag Tutorial

Step 1: Download and run O&O Defrag.
Download the O&O Defrag from its official website to make sure you have the latest version. And install it onto your computer step by step according to its Setup wizard.


2 setup types available for option: Complete and Custom. Select your proper one and continue.


Tick or tick out the checkboxes of “Grant access to O&O Defrag to all users from same network” and “Use O&O Defrag as default defragmentation tool” according to your need, and then click on the “Install” button to start the installation process.


Click on the “Finish” button to launch to O&O Defrag immediately .


Step 2: Defrag your specified hard drives by O&O Defrag.
Select the hard drive you want to defrag, and click on the “Start” button to perform a default defragmentation on the selected drive.


When the drive defragmentation is complete, a summary will display to let you know the numbers of fragmented files and the degree of fragmentation in your selected drive before or after the defragmentation. Click on the ”Close” button to complete and go back to the main interface.