Free (released under the GNU General Public License) disk defragment and optimize utility for Windows 2000/2003/XP/Vista/X64. Completely automatic and very easy to use, fast, low overhead, with two optimization strategies, and can handle floppies and USB disks/sticks. Included are a Windows version, a commandline version (for scheduling by the task scheduler or for use from administrator scripts), a screensaver version, a DLL library (for use from programming languages), and versions for Windows X64. JkDefrag is based on the standard defragmentation API by Microsoft, a system library that is included in Windows 2000, 2003, XP, and Vista. All defragmenters are based on this API, including commercial defragmenters. JkDefrag is therefore very solid and there is no risk of losing data. You can stop the program at any time, it will finish the current file in the background. If your disks use NTFS then you're even safe when the computer crashes in the middle of defragging. Nevertheless, it's still a good idea to backup before defragmenting, just like with other defragmenters, because the heavy use of the harddisk may trigger a hardware fault.
What's New:
- Re-fixed the "DisableDefaults" bug.
- Partial undo of the change that uses the mountpoint of a volume. It was causing problems during the automatic scanning for disks to be defragmented.
- Pushed the "Zone calculation" messages down to debug level 4.
- Fixed the VisualC example project.
Download JkDefrag 3.34: 32-Bit Version | 64-Bit Version | Sources (GPL, 454KB)
Screenshot: >> Click here <<
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However, I'm updating anyway.
The only things JkDefrag does differently are:
a) Consolidates all directories to the beginning of the HDD.
b) Allocates free space at the beginning of the HDD (but after the directories). This is done to reduce future fragmentation as the NTFS file system is designed to write new data to the first available free space found on the disk.
O&O is automated, JkDefrag relies on scheduling and command-line (unless you use a GUI).
This matters to some and others don't care.
It's down to preference on this one as they both do a superb job.
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