Defrag. You cannot defragment specific types of file system volumes or drives: You cannot defragment volumes that the file system has locked. You cannot defragment volumes that the file system has marked as dirty, which indicates possible corruption. You must run chkdsk on a dirty volume before you can defragment it. You can determine if a volume is dirty by using the fsutil dirty query command. For more information about chkdsk and fsutil dirty, see Additional references. You cannot defragment network drives.
You cannot defragment CDROMs. You cannot defragment file system volumes that are not NTFS, FAT or FAT3. With Windows Server. В 2. 00. 8В R2, Windows Server.
Windows IoT Microsoft Edge Windows Holographic Downloads; Samples; Support; Why Windows; Dashboard. Defragmenting Files. When a file is written to a disk. This article describes how to configure Disk Defragmenter to run without user intervention using the Task Scheduler tool in Windows XP. Updated: April 17, 2012. Applies To: Windows Vista, Windows Server 2008, Windows Server 2012, Windows 8.
- A volume must have at least 15% free space for defrag to completely and adequately defragment it. Defrag uses this space as a sorting area for file fragments.
- This article describes the Defrag.exe command line utility that is included with Windows XP. The Defrag.exe command line utility is specifically designed for.
![Microsoft Windows Defrag Microsoft Windows Defrag](http://cdn.windows7themes.net/pics/disable-disk-defrag-windows-7-ssd.jpg)
![Microsoft Windows Defrag Microsoft Windows Defrag](http://www.ylcomputing.com/images/free-defrag/free-defrag.gif)
В 2. 00. 8, and, Windows. В Vista, you can schedule to defragment a volume.
However, you cannot schedule to defragment a Solid State Drive (SSD) or a volume on a Virtual Hard Disk (VHD) that resides on an SSD. To perform this procedure, you must be a member of the Administrators group on the local computer, or you must have been delegated the appropriate authority. If the computer is joined to a domain, members of the Domain Admins group might be able to perform this procedure.
As a security best practice, consider using Run as to perform this procedure. A volume must have at least 1. Defrag uses this space as a sorting area for file fragments. If a volume has less than 1.
![Microsoft Windows Defrag Microsoft Windows Defrag](http://cdn.mos.techradar.com/Review%20images/PC%20Format/PCF%20235/PCF235.w_roundup.microsoft-320-80.jpg)
To increase the free space on a volume, delete unneeded files or move them to another disk. While defrag is analyzing and defragmenting a volume, it displays a blinking cursor.
When defrag is finished analyzing and defragmenting the volume, it displays the analysis report, the defragmentation report, or both reports, and then exits to the command prompt. By default, defrag displays a summary of both the analysis and defragmentation reports if you do not specify the /a or /v parameters. You can send the reports to a text file by typing > File. Name. txt, where File. Name. txt is a file name you specify.
For example: defrag. Volume/v> File. Name. txt. To interrupt the defragmentation process, at the command line, press CTRL+C.
Running the defrag command and Disk Defragmenter are mutually exclusive. If you are using Disk Defragmenter to defragment a volume and you run the defrag command at a command- line, the defrag command fails. Conversely, if you run the defrag command and open Disk Defragmenter, the defragmentation options in Disk Defragmenter are unavailable.