JkDefrag
JkDefrag | |
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![]() Image of drive during defrag. | |
Original author(s) | Jeroen Kessels |
Final release | 3.36.0.2
/ August 31, 2008 |
Written in | Microsoft Visual C++ 2005 |
Operating system | Windows 2000 Windows Server 2003 Windows XP Windows XP x64 Edition Windows Vista |
Type | Defragmentation program |
License | GNU GPL |
Website | www |
JkDefrag is a free open-source disk defragmenting utility computer program for Windows. It was developed by Jeroen Kessels (initials "JK", hence the name) beginning in 2004[1] and was released under the GNU General Public License. Since version 4 of 2008, much changed from previous versions, JkDefrag was renamed MyDefrag by its developer; earlier JkDefrag versions continued to be available. MyDefrag, which was closed source freeware, was discontinued, with the last version being v4.3.1, file date 21 May 2010; for several years the MyDefrag website has been a redirect to the still-existing JkDefrag site, but links to downloadable JKdefrag files are dead. JkDefrag source code is still available from third-party websites [2]
Operation
[edit]JkDefrag has many options. If run without options it groups files into 3 zones with the intention of optimizing speed:
- Directories and system files
- Regular files
- Large files referred to as "space hogs" in the documentation
Files outside their zone are moved to their zone. Directories are perhaps the most accessed data on disk, so zone 1 is placed at the beginning of the drive. After the directories comes a free space area, then zone 2 with regular files, another free area, and then zone 3 with "space hogs", which are large files, archives, Recycle Bin contents, service pack files, and other infrequently accessed data.[3]
JkDefrag characteristics:
- Both command-line & graphical executable programs, about 500 kilobytes total size;
- Automated operation;
- A range of command line interface options, allowing for scheduled defragmentation with administrator scripts;
- No need for installation; runs with default options by opening JkDefrag.exe;
- Screensaver defragmentation, with the option to run another screensaver when done;
- Source code (Microsoft Visual C++ 2005 for 32-bit version and Microsoft Visual C++ 2008 for 64-bit version) available;[4]
- A DLL library (for use in programming) licensed using the LGPL;
- Support for 64-bit versions of Windows XP and Vista with native x64 binaries;
- Documentation available on the web site.
JkDefrag uses the Windows defragmentation API.
Related software
[edit]There are several graphical user interface utilities designed to work with JkDefrag:
- JKDefrag Option GUI by Emiel Wieldraaijer includes support for 26 languages, and has support for BartPE and U3 implementations.[5] It was also nominated "Repair Tool of the Week" in TechNibble in August 2007.[6]
- JkDefragGUI by Markus Hörl is portable, includes support for 10(+30) languages, and there is a setup version.
- ScanDefrag supports JkDefrag and allows it to run during Windows startup.
Another Windows-based defrag program with a GNU GPL is UltraDefrag before version 8.
See also
[edit]Notes
[edit]- ^ Information obtained from product release notes: history.txt file
- ^ "JkDefrag version 3.36 source code". sourceforge.net (in German). Retrieved 2016-07-13.
- ^ Kessels, Jeroen. "JkDefrag v3.36". Archived from the original on 2015-02-15.
- ^ "JkDefrag version 3.36 source code". sourceforge.net (in German). Retrieved 2016-07-13.
- ^ Kurdi, Samer (31 July 2007). "JkDefrag GUI". Software Genius. Archived from the original on 15 April 2009. Retrieved 1 September 2009.
- ^ Whitty, Bryce (7 August 2007). "Repair Tool of the Week: JkDefrag GUI". Technibble.
References
[edit]- "Boxed Utility Blowout". Computer Power User. 7 (9): 66–68. September 2007.
- Ogasawara, Todd (12 July 2007). "Freeware/Open Source for Windows Weekly Summary". O'Reilly Windows Devcentre.
- Yegulalp, Serdar (13 March 2007). "Defragmentation freeware outpaces native tools in Windows". SearchWindowsServer.com. Archived from the original on 9 April 2010. Retrieved 2 September 2009.
- Yegulalp, Serdar (12 July 2007). "Must-have Windows utilities for 20 essential tasks". Computerworld.
- Spanbauer, Scott (12 June 2008). "Two top defraggers speed your disk accesses". Windows Secrets. Archived from the original on 2 January 2010. Retrieved 1 September 2009.