Free defragment disks software for windows

DefragMentor Lite CL is a free command line file defragmentation tool that will help you defragment a single file or a group of files as well as to obtain information on file and disk fragmentation. DefragMentor Lite CL (where CL stands for Command Line) is a perfect tool for automated file-based defragmentation.
Even if you defragment the entire disk on a regular basis, some frequently changed files become fragmented long before the next launch of disk defragmenter. So you can use DefragMentor Lite CL to optimize placement of individual files thus reducing access time and improving overall performance of your system. Database files of any kind (especially large ones) are the best example of what DefragMentor Lite CL can optimize.
Instead of running DefragMentor Lite CL manually every time you need to defragment files you can schedule a task, which Windows will run for you automatically at any convenient time. Use the standard Windows task scheduler if you want to work in this way.

JkDefrag GUI is a convenient GUI (Graphical User Interface) for JkDefrag JkDefrag GUI is a convenient GUI (Graphical User Interface) for the "JkDefrag", which is a free (GNU GPL) disk defragment and optimize utility for Windows.
JkDefrag is a Free (released under the GNU General Public License) disk defragment and optimize utility.
Completely automatic and very easy to use, fast, low overhead, with two optimization strategies, and can handle floppies and USB disks/sticks.

Secure Disk 2.1 build 1328 is surely a perfect solution for you to prevent others from reading your personal files in the computer. Try Feebe SecureDisk. It is a powerfull, easy to use disk encryption program, which transparently encrypts your private data. Feebe SecureDisk creates and supports encrypted virtual disks and these disks are visible as regular disks with correspondent drive letters. You can safely store your private data in these disks.

All data stored in virtual disks are encrypted with high strength algorithm, but the applications can easily access the data, just like the access from regular disks. You can format it, create directories, files, even install software.

Enhancements: May include unspecified updates, enhancements, or bug fixes.

Disk Wipe - Securely wipes data from disks Disk Wipe can securely erase the contents of a disk by leaving the drive completely blank or replacing it with random data. Numerous passes can be performed to ensure data is totally unrecoverable. Program works on hard and floppy disks aswell as USB/Flash drives.

Roadkils Disk Image creates and writes disk images files to hard and floppy disks Roadkils Disk Image will create and write disk images files to hard and floppy disks.
Great for writting boot disk images download from the internet or creating a perfect copy of a disk to email to someone else.