Rearrangement of sectors on a hard disk into contiguous units
"Defrag" redirects here. For other uses, see Defrag (disambiguation).
"Disk Defragmenter" redirects here. For the Microsoft Windows utility, see Microsoft Drive Optimizer.
Visualization of fragmentation and then of defragmentation
In the maintenance of file systems, defragmentation is a process that reduces the degree of fragmentation. It does this by physically organizing the contents of the mass storage device used to store files into the smallest number of contiguous regions (fragments, extents). It also attempts to create larger regions of free space using compaction to impede the return of fragmentation. Some defragmentation utilities try to keep smaller files within a single directory together, as they are often accessed in sequence.
Defragmentation is advantageous and relevant to file systems on electromechanical disk drives (hard disk drives, floppy disk drives and optical disk media). The movement of the hard drive's read/write heads over different areas of the disk when accessing fragmented files is slower, compared to accessing the entire contents of a non-fragmented file sequentially without moving the read/write heads to seek other fragments.
In the maintenance of file systems, defragmentation is a process that reduces the degree of fragmentation. It does this by physically organizing the contents...
files and free space back into contiguous areas, a process called defragmentation. Solid-state drives do not physically seek, so their non-sequential...
The following is a comparison of notable file system defragmentation software: Windows Task Scheduler "Idle" schedules and options settings will be applied...
allocation assists in the prevention of file system fragmentation; online defragmentation is also supported. A feature unique to XFS is the pre-allocation of...
inconsistencies will corrupt the filesystem. There is no online ext3 defragmentation tool that works on the filesystem level. There is an offline ext2 defragmenter...
Explorer on XP is, but only with proper defragmentation. On Vista, it moves a tad slower even if defragmentation of the disk has been performed." In 2009...
fragmentation is dealt with the connection tracking subsystem requiring defragmentation, though TCP segmentation is not handled. In case of FTP, segmentation...
a disk to occupy contiguous storage locations, a technique called defragmentation. Microsoft Drive Optimizer was first officially shipped with Windows...
The Ghetto Boys is a street gang based in New Cross, Lewisham and Deptford, South London. The gang was formed on the Woodpecker/Milton Court Estate and...
October 30, 2006. Kleiman, Dave; Hunter, Laura E (2006). Winternals Defragmentation, Recovery, and Administration Field Guide. Elsevier. ISBN 978-0080489872...
Defraggler is a freemium defragmentation utility developed by Piriform Software, which can defragment individual files or groups of files on computer...
Some computer operating systems perform defragmentation automatically. Although automatic defragmentation is intended to reduce access delays, performance...
Freeware is software that is available for use at no monetary cost or for an optional fee, but usually (although not necessarily) closed source with one...
Some computer operating systems perform defragmentation automatically. Although automatic defragmentation is intended to reduce access delays, the procedure...
PerfectDisk is a defragmentation software product for Windows developed by Raxco. The application keeps track of file usage to lessen defragmentation time and...
repair a corrupted filing system and sometimes recover deleted files. Defragmentation tools for FAT file systems may be used on such cards. The resulting...
administer the database effectively, including import, export, monitoring, defragmentation and analysis utilities. The core part of the DBMS interacting between...
root file system during installation. In July 2011, Btrfs automatic defragmentation and scrubbing features were merged into version 3.0 of the Linux kernel...
inherently a result of human material and product use and not secondary defragmentation in the nature. Depending on the definition used, nanoplastics are less...
the primary filesystem of the HP-UX operating system. With on-line defragmentation and resize support turned on via license, it is known as OnlineJFS...
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