How to Defragment a File
To defrag a file on your hard drive, you must defrag the entire drive. Windows has an internal disk defrag tool that lets you defrag files on your hard drive without the need to purchase third-party applications. Defragging your hard drive improves performance, so you can speed up the computer using the defrag utility. Defragging places file data side-by-side, so the hard drive needs less time to "search" for files.
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Instructions
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Click the Windows "Start" button on your computer. Type "Disk Defragmenter" in the search text box. Press "Enter." A window opens with a list of Control Panel utilities.
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Click "Disk Defragmenter" to open the utility. Click the drive you want to defrag. Typically, the C drive has the files you save on your computer. Click "Analyze disk" to identify if you need to defrag the disk.
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Click "Defragment disk" to defrag your files. The process takes several minutes to complete. The computer's performance slows down while defrag runs, so you should defrag the computer when you don't need to use it for work.
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