Your CPU is also removed from the constant need to instruct your hard drive to write data to the hard disk. The Data is instead held in a temp space which frees up your hard drive for other tasks. Write caching is a Windows 7 feature that allows your computer to delay data slated to be written to the hard drive. You can still use your computer during the defragmentation process.You can speed up both your hard drive and CPU with one click. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.ĭisk Defragmenter might take from several minutes to a few hours to finish, depending on the size and degree of fragmentation of your hard disk. If the number is above 10%, you should defragment the disk.Ĭlick Defragment disk. Once Windows is finished analyzing the disk, you can check the percentage of fragmentation on the disk in the Last Run column. If you're prompted for an administrator password or confirmation, type the password or provide confirmation. To determine if the disk needs to be defragmented or not, click Analyze disk.

Under Current status, select the disk you want to defragment. In the search box, type Disk Defragmenter, and then, in the list of results, click Disk Defragmenter. Open Disk Defragmenter by clicking the Start button. Disk Defragmenter runs on a schedule, but you can also analyze and defragment your disks and drives manually. Disk Defragmenter in Windows rearranges fragmented data so your disks and drives can work more efficiently. Removable storage devices such as USB flash drives can also become fragmented. Fragmentation makes your hard disk do extra work that can slow down your computer.

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