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Free disk defragment and optimize utility for Windows 2000/2003/XP/Vista/X64. Completely automatic and very easy to use, fast, low overhead, with several 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.

What's New in JkDefrag 3.34 :

· 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.

What's New in JkDefrag GUI 1.01 :

· Added Automatic update of the scheduled job with newest jkdefrag when downloaded
· Added Automatic update of the installed version with newest jkdefrag when downloaded
· Added Croatian translation
· Added Indonesian translation
· Added option to add a delay when doing a schedule at logon
· Added option to show logfile after defragmentation (GUI only)
· Added empty Prefetch folder to Internal Cleaner
· Added pagedefrag to the U3 version of JkDefragGUI
· Added JkDefrag history to menu
· Fixed helpfile not displayed on network drive
· Fixed bug JkDefrag version not updated when updated through automatic update at startup
· Fixed bug JkDefrag downloaded everytime when run from BartPe enviroment
· Fixed bug "Show System" selected on startup when disabled
· Fixed bug spacehogs disabled when selected and enabled when not selected
· Fixed bug calendar not displayed correctly on Vista OS
· Improved U3 version no need re-download JkDefrag on every usage
· Removed screensaver copied to system32 during update when not installed
· Removed some external links in help menu from BartPE Mode