To obtain the latest version of the program please visit the project's download page.

There are two different types of packages available for download:

Full-featured installer, which installs all of the program features, but require installation therefore cannot be used directly from USB sticks.
Portable package. Download it, unpack it and use without an installation. Copy it on an USB stick and you will be able to use UltraDefrag everywhere by simply running it from there. Note that boot time defragmenter is missing from the portable packages, but all other features are included. You can find more information about portable applications here.

The installer allows installing the UltraDefrag Micro Edition too, which is a lightweight version of the program containing only the command line tool and the boot time defragmenter. It is intended to be used from the console only.

You must have a 64-bit version of Windows to run the 64-bit versions of the program.

The IA-64 version was never tested by the authors. It requires the Intel Itanium processor and an appropriate 64-bit edition of Windows.

You must be an administrator to install and run UltraDefrag.

Note that UltraDefrag installs into the Windows directory. This is by design, because it highly simplifies the program development. Moreover, it is impossible to run the boot time defragmenter without having its files inside the System32 directory.

To expand usage statistics gathering by the website UltraDefrag sends also requests to the Google Analytics service during startup. It takes no negative effect on security - many thousands of websites around the world use the same service to gather basic statistics of use. However, the UltraDefrag usage tracking can be turned off during an installation.

Silent Installation

UltraDefrag can be installed in silent mode by adding the /S switch to the installer's command line at the command prompt. In this case no dialogs will be shown and the program will be installed to the hard drive completely with all the features enabled.

The following additional command line switches are supported:

/LANG: Select the language to be installed. For example, use /LANG="German" to install the German language pack.
Valid language names can be found at the Translation Wiki
/FULL=1: Install the full edition, which includes all components and icons.
/MICRO=1: Install the micro edition, which includes only the core components and the shell extension.
/ICONS=(0|1): Install or remove all shortcut icons. Example: /ICONS=0 removes all icons.
/BOOT=(0|1): Install or remove the boot components. Example: /BOOT=1 installs the boot components.
/CONSOLE=(0|1): Install or remove the console components. Example: /CONSOLE=1 installs the console components.
/GUI=(0|1): Install or remove the GUI components. Example: /GUI=1 installs the GUI components.
/HELP=(0|1): Install or remove the documentation. Example: /HELP=0 removes the documentation.
/SHELLEXTENSION=(0|1): Install or remove the Explorer context menu handler. Example: /SHELLEXTENSION=0 removes the Explorer context menu handler.
Installing the context menu handler forces the console interface it depends on to be installed.
/DISABLE_USAGE_TRACKING=(0|1): Enable or disable web based usage tracking. Example: /DISABLE_USAGE_TRACKING=1 disables usage tracking.
/STARTMENUICON=(0|1): Install or remove the start menu icon. Example: /STARTMENUICON=1 installs the start menu icon.
Installing the start menu icon forces the GUI interface it depends on to be installed.
/DESKTOPICON=(0|1): Install or remove the desktop icon. Example: /DESKTOPICON=0 removes the desktop icon.
Installing the desktop icon forces the GUI interface it depends on to be installed.
/QUICKLAUNCHICON=(0|1): Install or remove the quick launch icon. Example: /QUICKLAUNCHICON=1 installs the quick launch icon.
Installing the quick launch icon forces the GUI interface it depends on to be installed.

Example command line to silently install the full edition in "Burmese (Padauk)" with only the start menu icon:

 ultradefrag.bin.x86 /S /LANG="Burmese (Padauk)" /FULL=1 /ICONS=0 /STARTMENUICON=1

To check the result of the command line switches omit the /S switch, which opens the interactive installer and allows checking the selections on the component page.

There is also a silent mode for the uninstaller program. At the command prompt type %windir%\UltraDefrag\uninstall.exe /S to remove the program from the hard drive automatically without any graphical dialogs.

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Next: Console Interface