A laptop can be defragmented using the Disk Defragmenter tool in Microsoft Windows 7 and Microsoft Windows 8 and the Disc Utility program in OS X for MacBook. Windows 7 and Windows 8 automatically defrag the hard drive on a schedule. OS X also manages files by automatically optimizing the laptop each time a system update or new application is installed. This eliminates the need for manually defragmenting the laptop.
To manually defragment a Windows 7-based laptop, simply click the start button, select "All programs," the "Accessories." Select "System Tools" then click Disk defragmenter. To determine whether or not the hard drive needs to be defragged, click on Analyze Disk. Disk defragging usually takes from several minutes to a few hours to complete, depending on the capacity of the hard disk. The laptop can still be used during the defragmentation process. Third-party defragmenting tools can also be used. For Windows 8, open search and type in "Defragment" then select "Defragment and optimize your drives."
Fragmentation slows down the hard drive by making it perform extra work. Defragmentation rearranges the fragmented data, allowing the hard disk to work more efficiently. External storage devices like flash drives can also become fragmented. If the laptop uses SSD, or Solid State Drive, then there is no need to manually defrag it.