UltraDefrag 6.0.4

what is defragmentation :

 

See title
Fragmentation makes your hard disk do extra work that can slow down your computer. Removable storage devices such as USB flash drives can also become fragmented. Disk Defragmenter rearranges fragmented data so your disks and drives can work more efficiently. Disk Defragmenter runs on a schedule, but you can also analyze and defragment your disks and drives manually.




 UltraDefrag is an open source software and it support all the operating systems.  
Download UltraDefrag 6.0.4  
Choose your version
ultradefrag 64bit                    Download Untrafrag 32bit

Notes

  1. If the disk is already in exclusive use by another program or is formatted using a file system other than NTFS file system, FAT, or FAT32, it can't be defragmented.
  2. 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. See Check a drive for errors for more information.