Windows 7 is much more detailed in what it tells you about its progress. In Windows 7, you can stop the defrag at any time, without damaging your disks in any way, by selecting Stop operation. Actively scan device characteristics for identification. Use precise geolocation data.
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Updated on January 14, Tweet Share Email. In This Article. Find the Defragmenter. The Main Defragmentation Screen. Schedule Defragmentation. Analyze Hard Drives. Watch Your Progress. Instructions in this article apply to Windows 7. Microsoft recommends defragmenting any disk that has more than 10 percent fragmentation. Disk Defragmenter runs on a schedule, but you can also analyze and defragment your disks and drives manually.
To do this, follow these steps:. Open Disk Defragmenter by clicking the Start button. In the search box, type Disk Defragmenter , and then, in the list of results, click Disk Defragmenter. To determine if the disk needs to be defragmented or not, click Analyze disk. If you're prompted for an administrator password or confirmation, type the password or provide confirmation. Once Windows is finished analyzing the disk, you can check the percentage of fragmentation on the disk in the Last Run column.
Click Defragment disk. Disk Defragmenter might take from several minutes to a few hours to finish, depending on the size and degree of fragmentation of your hard disk. You can still use your computer during the defragmentation process. If a disk that you're expecting to see under Current status is not showing up there, it might be because it contains an error.
Try to repair the disk first, then return to Disk Defragmenter to try again. Or consider using an automatic tool like Avast Cleanup , which not only defrags your hard drive, but also puts performance-sapping apps to sleep and clears out unwanted files. See all Performance articles. Click on the Start button in the bottom left corner of your screen.
Type the word defrag. Click on Optimize. That can take a few hours to finish. Click on the Start orb in the bottom left corner and type in defrag. Click on Defragment disk to launch the defragmentation process. Leave your PC alone!
Some third-party utilities can make your life easier: One such tool is our own Avast Cleanup , which includes its own defrag program. Best of all: it runs fully automatically on a regular basis or manually, you decide! Check it out:. Get it for Android , Mac. Get it for Mac , Android. A hard drive is made out of mechanical components: multiple discs are stacked on top of each other and rotated through a spindle. These discs, also called platters, contain the data.
Hard disk access is a highly mechanical process, even though the other computer components are purely digital. Disk access is also the slowest part of computing; access times to the bits and bytes on a traditional hard disk drive HDD is typically in the millisecond range, whereas accessing data on a modern solid state disk SSD or in RAM is done in a fraction of a millisecond.
Aside from the raw speed to access files, the overall throughput of hard disks is also low. To learn more about the differences, check out our SSD vs. HDD comparison. But the key takeaway is that old-school HDDs are extremely slow. In theory, any file on your hard disk would be stored in a continuous manner on the platter.
Perhaps it starts out that way, when your system is brand new.
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