Many thanks for installing O&O Defrag 27!
What is O&O Defrag?
Whenever it saves data, Windows scatters file fragments all over the hard disk and this slows down access times considerably. Defragmentation reverses this by rearranging data and speeding up access times dramatically. This not only saves the user time, it also reduces wear on hard disks and extends their life expectancy. Defragmentation can even make the difference if you lose important data because chances of full recovery are better on a defragmented disk.
First steps with O&O Defrag
After the first start of O&O Defrag you can get your license by clicking on “I would like to enter my license number or purchase a license”.
Thanks to its new intelligent feature, Install & That’s All, O&O Defrag automatically configures the best settings and defragmentation methods for a computer and its hardware. The optimization best-suited for existing HDDs and SSDs will be run on a regular basis, keeping long term PC performance at its peak.
Alternatively, you can of course configure your own settings manually as much as you would like.
Two Interface styles, Classic & Modern!
Brand new in O&O Defrag 27 is a choice of two interfaces: Classic and modern! The Classic is the familiar UI, but we now offer a modern interface, much simpler and streamlined for set and forget fans. Simply choose your style and let O&O Defrag do the rest for you. In O&O Defrag 27 you can switch at any time between the classic view with all professional settings and the modern view reduced to the essentials.
“Check & Repair” Function
New also in the modern UI is the Check & Repair function. O&O Defrag 27 checks your hard drive or SSD for inconsistencies that can lead to problems. The component memory and the Windows system files are checked for errors. After the check is complete, O&O Defrag will show you whether and which errors were found. Most errors can be corrected directly with the repair function.
Analysing a drive’s state of health with S.M.A.R.T.
In O&O Defrag 27 the S.M.A.R.T. functionality has been integrated for the very first time. This indicates the “health status” of hard disks, SSDs and RAIDs whenever there is any problem. Such a problem could be a high temperature or an error reported by the drive itself. If there is anything unusual going on, a message will be displayed in the Windows Action Center.
Drive activity display in the Windows taskbar<
In the new O&O Defrag version, read and write accesses on the computer will be more visible. Users can see have the read and write operations currently being run on any drive displayed in the taskbar. A search on the respective drive can be started by right-clicking.
Analyse your drives
By analyzing hard disks, you can get an overview of how files are arranged on a drive, and how heavily fragmented they are. O&O Defrag creates a detailed status report about the fragmentation level once the analysis has been completed:
- Select the drive you want to have analyzed from the list of drives.
- Start the Analysis using the Ribbon bar or the right-click menu.
- Depending on the size of the drive, the analysis can take some time. You can see the analysis being done on the drive icon and in the status display.
- Once defragmentation is completed you can have a comprehensive report displayed.
You can analyze several drives simultaneously. Mark the various drives by keeping the Ctrl key pressed while selecting.
Defragmenting your drives
O&O Defrag allows you to defragment individual drives or entire computers with just a few mouse clicks. The first defragmentation usually requires the most time because O&O Defrag has to check your entire system and move all files into their optimal position. We therefore recommend an initial defragmentation with the STEALTH or SPACE methods. Defragment single drives:
- Select the drive you wish to defragment from the drive list.
- After clicking the Start button in the ribbon bar, defragmentation will begin using the default SPACE method for HDDs and SOLID/Complete for SSDs. If you want to change this method, open the Start button’s lower menu and select the method you desire.
- Depending on the size of your database, defragmentation can take up to several hours. You can see the defragmentation in progress on the drive symbol and the status display.
Once defragmentation is completed you can have a comprehensive report displayed.
We hope you enjoy using O&O Defrag!
You can find further tips and tricks on our web page at