Four, Free Defragmentation Utilities

In the context of administering computer systems, defragmentation  is a process that reduces the amount of fragmentation in file systems. It does this by physically organizing the contents of the disk to store the pieces of each file  close together and contiguously. It also attempts to create larger regions of free space using compaction to impede the return of fragmentation. Some defragmenters also try to keep smaller files within a single directory together, as they are often accessed in sequence. Here are links to four,FREE defragmentation programs

• UltraDefrag tool
• MyDefrag 4.2.6
• Smart Defrag
• Defraggler defrag hard disk utility