- Click Start, point to All Programs, point to Accessories, point to System Tools, and then click Disk Defragmenter.
- Click the volume that you want to check for fragmented files and folders, and then click Analyze.
- When Disk Defragmenter finishes analyzing the volume, it displays its analysis of the volume in the Analysis display. It also displays a dialog box that tells you whether you need to defragment the volume.
- Click the volume that you want to defragment, and then click Defragment.
- After the defragmentation is complete, Disk Defragmenter displays the results in the Defragmentation display.
- Click View Report to view the Defragmentation Report, which displays detailed information about the volume you defragmented.
Note: After you click the Defragment Button and if there a message that says: “A volume has only 14% (or much lower than that) free space available for use by Disk Defragmenter. To run effectively, Disk Defragmenter requires at least 15% usable free space” just click “Yes” to continue to defrag. Disk Defragmenter uses this space as a sorting area for file fragments. If a volume has less than 15% free space, Disk Defragmenter will only partially defragment it. To increase the free space on a volume, delete unneeded files or move them to another disk.