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To defragment a disk, defragmentation software (also known as a "defragmenter") can only move files around within the free space available. This is an intensive operation and cannot be performed on a filesystem with little or no free space.
Defragment your hard drive. Also known as defragging, defragmenting your hard drive is a process that can clear up memory and help optimize your computer's performance.
Prior to the Windows Vista release, only one volume could be analyzed or defragmented at a time and only one instance could run. [8] Only local volumes can be defragmented; network volumes are not supported. [8] The GUI version prior to Windows Vista cannot be scheduled. However, the command line utility since Windows XP and later can be scheduled.
Window, sound, e-mail, running a command; at parameter changes, threshold, temperature Estimate health and performance by percentage, and offers online drive analysis (and compares from other users). SpinRite: DOS, FreeDOS: Commercial proprietary: GUI Yes Yes No Yes [12] Yes No
Auto defrag when idle Stable release; Auslogics Disk Defrag Auslogics Freeware: FAT16, FAT32, NTFS Windows XP and later Yes Yes Yes Yes Yes 10.2.0.1 (Free), 4.11.0.7 ...
Fragmentation can be remedied by re-organizing files and free space back into contiguous areas, a process called defragmentation. Solid-state drives do not physically seek, so their non-sequential data access is hundreds of times faster than moving drives, making fragmentation less of an issue.
Defragmentation should be disabled on solid-state drives because the location of the file components on an SSD does not significantly impact its performance, but moving the files to make them contiguous using the Windows Defrag routine will cause unnecessary write wear on the limited number of write cycles on the SSD.
However, while it may not be possible for a system to continue running all programs in the case of excessive memory fragmentation, a well-designed system should be able to recover from the critical fragmentation condition by moving in some memory blocks used by the system itself in order to enable consolidation of free memory into fewer, larger ...