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. Windows 7 More Rate this Article:. Documentation Category:. Top Five Articles Common Windows file extensions. Searching for Large Files in Windows. Determining your Windows Username. Use auslogics on demand defragger, no schedules for me. I never practiced the idea of leaving anything on when I am not using it and my hard drive is just fine for now.
While theoretically it should be possible by shuffling individual sectors around, most tools require enough free space to contain at least the largest file being defragmented. Dom I believe when Leo said shuffling sectors around was referring to shuffling the contents of those sectors. Not an error, just another way of looking at it. If Windows 7 runs defragging automatically once a week, does that mean that if you buy a solid state hard drive you should turn the automatic defragmenting off, if you can?
But I cannot analyze it or defrag it. Is there a reason for that happening? Should I be able to defrag the C drive? And why does it keep increasing like that? However, when I click on the C Drive, even to analyze it, nothing at all happens.
The same for when I try to defrag it. And then the next time I look at that window, I see the percentage has usually risen by a couple points on the C drive. Should I be able to defrag the hard drive? I wonder about the process of disk fragmentation. I am constantly in need to defragment a disk. It seems a scam? I defragmented my disk, did some work, and , files were immediately fragmented. How are files written? It seems that it is not done in any coherent, intelligent way.
Is it a Windows problem? Do ext3 disks suffer this problem? Are files written to the first available space, regardless of how many pieces they will be in, or are they written to the largest free space that will contain them?
Do multi-core CPUs write multiple files at once, thus guaranteeing fragmentation? I use Adobe products, eg, Lightroom. It has many options and features which I consider as not necessary but still good to have since Windows OS has most of these options included also.
Thanks for a great article and hope to hear from you soon. Hi, Leo, I seem to have a severe problem with disc errors caught by two scans which I use. My computer started running badly about 3 wks ago. Defrag is taking more than 12 hrs to run. I hope you can help with at least one of these suggested problems. Thank you!! This article explains what a browser cache is and how to clear it. Windows Vista SP2 also defrags weekly, by default.
As a photographer, I use editing tools which fragment the disk rapidly, and in a matter of a couple days, can noticeably slow performance.
I changed my automatic Schedule, from the default Weekly to Daily, as I use my computers a lot. But I do not notice any difference! One comment referred to programs that run at Start up, which may not be needed unless the user runs them specifically when needed.
How to identify them?? What were you expecting? Unless you do something that results in dramatic fragmentation in a short period of time most of us do not , the difference between daily and weekly would not be noticable. And to echo 1: SO not worth it. Depends on the programs. Could be wrong, of course. What I do see, though, are system reserved partitions with very little free space, and that could also prevent a defrag from completing.
Comments violating those rules will be removed. Relax and be free from anxiety Take back good sleep and help alleviate pain. Fragmentation doesn't cause your computer to slow down as much as it used to—at least not until it's very fragmented—but the simple answer is yes, you should still defragment your computer. However, your computer may already do it automatically.
Here's what you need to know. If you have a solid-state drive SSD in your computer, you do not need to defragment it. Solid-state drives, unlike regular hard drives, don't use a spinning platter to store data, and it doesn't take any extra time to read from different parts of the drive. So, defragmentation won't offer any performance increases though SSDs do require their own maintenance.
Of course, if you have other non-solid-state drives in your computer, those will still need defragmentation. Windows 7 and Windows 8 automatically defragment your hard drives for you on a schedule, so you shouldn't have to worry about it yourself. To make sure everything's running smoothly, open up the Start menu or Start screen and type "defrag.
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