HDCleaner - Help File

Complete cleaning for your Windows PC

HDCleaner is the ultimate tool for cleaning, speeding up, and repairing your device to improve its performance and make it more secure. Thanks to its simple interface, efficient cleaning features, and optimization options, it's perfect for both advanced and novice users. With over 5,000 cleaning and repair functions, HDCleaner minimizes junk files and frees up more system resources for Windows, requires less memory, and runs error-free, resulting in better PC performance. HDCleaner protects your privacy by deleting browsing history and browser cookies. All major browsers are supported. Chrome and Mozilla-based browsers can be added. Prevent unnecessary programs from starting when your computer boots and uninstall programs you don't use; they only slow down your computer. This frees up disk space and saves resources.

Majorgeeks has selected HDCleaner as one of the 25 Must-Have Windows Programs for 2025.

HDCleaner - Complete Cleaning for Your Windows PC

Is your computer too slow? Over time, a PC accumulates a multitude of unwanted files and information that not only consume storage space, but also slow down the system and provide information about user behavior. HDCleaner cleans these files and speeds up the computer in no time. Optimized for use with solid-state drives (SSD) and hard disk drives (HDD).

Important Settings for Browser Cleaner
To prevent important cookies (banking, LastPass, website logins, etc.) from being deleted, open 'Clean', 'Manage Cookies', locate the desired cookie in the 'Delete Cookies' section, then right-click and select 'Keep Cookie'. The desired cookie is now in the 'Keep Cookies' section and will be excluded from the cleaning process. To prevent saved passwords from being deleted, uncheck 'Delete Saved Passwords'. If you have set your browser to restore your last session, you should uncheck 'Saved form information' and 'Session'.

Forensic Data Recovery
To prevent your deleted data from being rendered readable with forensic or specialized recovery software, we recommend that you select 'Destroy forensic traces after cleaning...' after completing the cleaning process.
1) Enable Delete paging file on shutdown
2) Disable Windows Search and 'Clean up residual traces in indexing service'
3) Enable Destroy USN journal traces
4) Enable Destroy Cluster Tips
5) Enable Overwrite Free Space
6) Enable Destroy MFT traces.

Optimize PC Performance
With over 5,000 cleaning and repair features, HDCleaner minimizes junk files and frees up more system resources for Windows, uses less memory, and runs error-free, resulting in better PC performance.
You can add any program on your system to HDCleaner to have its data cleaned.
Supports Winapp2.ini.
Optimized for use with solid-state drives (SSD) and hard disk drives (HDD).
HDCleaner supports three cleaning modes:
Simple Cleanup - HDCleaner automatically scans for internet traces and junk files, which can be easily deleted. No user settings are required.
Standard Cleanup - This option is for standard users. The user determines which plugins should be deleted. Only the most commonly used plugins are displayed.
Advanced Cleanup - Expert Mode is for experienced users. The user determines which plugins should be deleted. All plugins are displayed.

Protects Your Privacy
HDCleaner protects your privacy by deleting your browsing history and browser cookies. Supported browsers: Firefox, Microsoft Edge, Microsoft Chromium Browser, Internet Explorer, SeaMonkey, K-Meleon, Waterfox, Pale Moon, Basilisk, IceDragon, Opera, Opera Neon, SRWare Iron, BliskBrowser, CentBrowser, EpicBrowser, Google Chrome, AmigoBrowser, Iridium, 360Browser, ChromiumBrowser, Vivaldi, 7StarBrowser, CoolNovoBrowser, CocCocBrowser, CooWonBrowser, SlimJetBrowser, YandexBrowser, Brave Browser, FalkonBrowser, Dragon, Safari, Blisk, Torch, SleipnirBrowser, CCleaner... CHROME and MOZILLA-based browsers can be added. See the help file.

Faster Startup
Prevent unnecessary programs from starting when your computer boots up. When you start your computer, it's not just Windows that loads. All of these automatically opening programs consume system memory and can slow down performance. Fortunately, managing startup programs isn't difficult with HDCleaner.
Uninstall programs you don't use; they only slow down your computer. This frees up memory and saves resources. All associated files, settings, and registry entries are also removed.
Clean and Optimize the Registry
The registry contains all the information about your PC settings, software, and hardware. Incorrect file paths, corrupted entries, and other types of errors slow down your computer. Registry Cleaner searches for and fixes various registry problems such as invalid shortcuts, incorrect paths, corrupted ActiveX and COM entries, CLSID values, Explorer extensions, BHOs ​​(Browser Helper Objects), and other types of corrupted and outdated data.
If the registry is corrupted, it can lead to system errors and render the system unusable, requiring a reinstallation. Therefore, it's important to always have a backup of the registry so you can restore your system at any time if something goes wrong. HDCleaner helps you back up and restore the registry.
Search the registry, find the desired registry values ​​that match the specified search criteria, and display them in a list. Once you've located the registry values, you can easily navigate to the correct value in RegEdit by double-clicking the desired registry item. You can also export or delete the found registry keys and values.
Defragment the Registry - Analyze and optimize the registry database. HDCleaner scans and optimizes the Windows registry by removing errors, gaps, and free space, thereby improving computer speed.
Find and Remove Duplicate Files - Find and remove duplicate files on your computer. The fast search algorithm finds duplicates of any file type, such as text, images, music, or movies.
DirToHTML is a directory-to-HTML index converter that creates an HTML index file from directory structures and files on your computer. The file list can contain subfolders, a single folder, or entire drives.
DiskDoctor checks a volume's file system and file system metadata for logical and physical errors.
Create and edit system restore points - Restore points are created to allow users to restore the previous system state. Each restore point contains the information needed to restore the system to the selected state. Restore points are created before key changes are made to the system.
Delete files and folders, overwrite free space, and erase entire partitions or entire drives using pseudorandom data or the secure erasure algorithms US DoD 5220.22-M (8-306. / E), US DoD 5220.22-M (8-306. / E, C, and E), Schneier's 7-pass, or Gutmann 35-pass.
With the file splitter, you can split a large file into smaller pieces and then reassemble them.
Encrypt and decrypt files using the Advanced Encryption Standard (AES), also known by its original name, the Rijndael encryption algorithm.
Detect and analyze Alternate Data Streams (ADS).
Securely erase entire hard drives.
Securely erase entire SSDs (SECURE ERASE) without destroying them and reset them to factory default settings.
Automatically optimize memory and increase RAM.

System Requirements
Windows 11, 10, 8.1, 8, 7 and Vista. Including both 32-bit and 64-bit versions.
Available languages
German, English, Polish, France, Hungary, Simplified Chinese, Traditional Chinese, Korean, Slovak, Indonesian, Czech, Greek, Romanian, Hindi, Italian, Netherlands, Portuguese, Spanish, Turkish, Japan, Arabic, and Russian.

Overview Page
Cleaning Summary
Here you'll find a summary of all previous HDCleaner activities.
Device Performance and Integrity
Driver problems often lead to error messages, crashes, or blue screens in Windows. HDCleaner detects these problems, and clicking on "Information" usually marks this device with a small exclamation mark.
System Startup & Shutdown
Shows how many seconds your PC takes to boot or shut down. Clicking on "Information" also displays programs that interfered with this system startup or shutdown process.
Hard Drive Health
HDCleaner checks your drives for hard drive errors and fixes them if desired. Click on 'Information' for detailed information.
Installed security software shows you the installed antivirus, antispyware, and firewall programs. The status of System Restore is analyzed and can be easily enabled if disabled.
Security Center - HDCleaner checks the status of important security areas and displays a corresponding warning if problems occur (e.g., an out-of-date antivirus program). The status of the firewall, automatic updates, antivirus, antispyware, Internet settings, User Account Control (UAC), Windows Security Center service, and all areas of Windows Security Center are checked. If the Security Center is disabled, you can easily enable it here.
System Information - Information about RAM, CPU, operating system, and graphics card. Click on 'Information' for detailed information.

Clean
Clean Wizard
HDCleaner offers three cleaning modes to clean your PC: Simple Clean, Standard Clean, and Advanced Clean.
Simple Cleanup - HDCleaner automatically searches for internet traces and junk files, which can be easily deleted. No user settings are required.
Standard Cleanup - This option is for standard users. The user determines which plugins should be deleted. Only the most commonly used plugins are displayed.
Advanced Cleanup - Expert mode is designed for experienced users. The user determines which plugins should be deleted. All plugins are displayed.
Under Manage Cookies..., you can specify which cookies should be excluded from the cleanup process.
Simple Cleanup
Specify the browsers from which internet traces, history, and cookies should be removed, and whether the Recycle Bin should be emptied, and whether Temporary System Files, Temporary Internet Files, and Temporary Application Data should be removed. Then click 'Clean Now' to start the cleanup process.
Standard or Advanced Cleanup
Specify the plugins or modules to be cleaned in the settings of the Browser Cleaner, System Cleaner, Plugin Cleaner, or Registry Cleaner. To include the Browser Cleaner, System Cleaner, Plugin Cleaner, or Registry Cleaner in the analysis or cleanup process, the corresponding checkbox must be activated.
To start the analysis process, click 'Analyze Now'. To start the cleaning process, click 'Clean PC' and follow the instructions.
After the analysis, you can list the objects to be deleted under Details and select/deselect results individually using the checkboxes to then start the cleaning process.
To display the cleanup wizard, click 'Show cleanup wizard'.
Enabling the TRIM command for SSDs increases PC speed. The operating system uses the TRIM command to inform an SSD which data has been deleted. The disk then empties the memory cells when idle. There is no need to explicitly empty the memory cells before a future write operation.

Data Destruction
Set the deletion options in the Options dialog box.
Permanently delete files
All selected files and folders will be deleted according to international standards, making the deleted data on the storage device irretrievable.
Overwrite free space on partition
No existing files or data will be deleted; only the areas marked as free on the hard drive will be overwritten, making them irretrievable. Specify the deletion method under 'Options'.
Overwrite ALL data on the partition
All files and data on the partition will be deleted, making them irretrievable! After deletion, you must reformat the partition to use it. Specify the deletion method under 'Options'.
SECURE ERASE of storage devices (SSD, hard drive, flash drive, etc.)
SECURE ERASE deletes all data on an SSD and marks the cells as empty. This resets the SSD to factory settings and peak performance, and it only takes a few seconds.
A hard drive wipe deletes all data on the hard drive. This can take several hours. NOTE: The data cannot be recovered! After deleting all partitions, you must recreate at least one partition and THEN format it.

System
Uninstaller - Remove Programs
The uninstaller removes unnecessary software, apps, and optional features from your computer, freeing up additional storage space on the drive.
Startup Programs
Optimize Windows startup. Disable programs that run automatically when you boot or log in.
System Restore
A system restore restores your system settings to an earlier point in time. Your files are neither deleted nor changed.
Browser Helper Objects (BHO)
Browser Helper Objects (BHO) are computer programs that extend the functionality of your browser. Remove or disable unnecessary or dubious BHOs.
System Information
The system diagnostic tool displays all relevant system parameters and software information.
Hardware Information
The system diagnostic tool displays all relevant hardware information.

Hard Drive
DiskDoctor
DiskDoctor checks your hard drive and fixes any errors found.
Defragment Disk
Improve PC performance by defragmenting and rearranging files on your hard drive.
DiskAnalysis
DiskAnalysis lists the largest videos, music files, images, and archive files that use the most disk space.
Invalid Link Files
Search for broken links pointing to the wrong folder or file name.
Duplicate Files
Scan entire hard drives, storage media, or just individual directories for duplicate files.
Paging File
The pagefile.sys file serves as a memory reserve when other memory resources in the RAM become scarce.
Delete Unimportant Files from Your Hard Drive
With increasing usage, more and more unnecessary files accumulate on Windows systems.
Disk Space Manager
The File and Disk Space Manager shows how much disk space files or entire folders take up.

Tools
Recover Deleted Files
Recover emails, photos, videos, PDF documents, and various other deleted files.
DirToHTML
Display the structure of all your data, files, folders, and directories clearly as a web page (.html).
AES - Encrypt Files
Encrypt your sensitive data with 256-bit AES encryption.
File Splitter
Splits large files into several smaller pieces so they fit on storage devices with limited storage space, such as CDs or floppy disks.
ADS Scanner
ADS Scanner scans NTFS drives to detect alternate data streams. This is an NTFS technology that allows malware or other applications to hide files and data from Explorer and other file management programs. Recent browser hijackers have used ADS to hide their files, and few anti-malware scanners detect this. Use ADS Scanner to search for and remove these streams.
Rename Files
Rename multiple files at once, e.g., remove any characters or replace text...

Registry
Search the Registry
Quickly and precisely search the Registry using detailed search options. All results are clearly displayed in a list and can be sorted, deleted, or exported as desired.
Backup and Restore the Windows Registry
The Windows Registry is the foundation for the entire Windows configuration. It is a hierarchically structured database that contains everything relevant to the smooth operation of your computer.
Defragment the Registry
Reorganizes your Registry to prevent database problems. This not only saves storage space but also results in faster access times, thus enabling faster work overall.

Monitoring
Maximum performance through live tuning and automatic disk space cleanup
With HDCleaner, you can set up automatic monitoring and cleaning of your Internet browsers when you close them, as well as automatic disk space cleanup of your PC.
Live Tuner changes the process priorities of individual applications to speed up their startup.
Monitor autorun entries in real time. If a program enters the autorun routine, you will be notified.
Automatic memory optimization with or without notification. (Time period adjustable under Options)
System Monitoring cleans your PC when a specified threshold is reached (time period adjustable under Options)
Browser Monitoring monitors your browsers and can automatically clean browser files and settings when you close the browser, or ask you if you want to run a cleanup.
If you enable automatic monitoring, an icon will appear in the system tray.

Backup Center
Before changes are made to your system, a backup of deleted items is created upon request. This allows you to easily restore them in the event of problems.
HDCleaner can create backups for the following modules:
Registry Cleaner, Remove Unnecessary Files, Autorun Manager, Scan Registry, and PluginCleaner (registry entries only).
You can easily restore these backups if necessary.
To do this, select the backup you want to restore and click 'Restore' to restore the entire backup. Click 'Open' to restore individual items, or click 'Delete' to delete the backup to the Recycle Bin.

Clone
Clone Hard Drive or SSD
This process copies the entire contents of one hard drive to another to create two identical drives with the same file structure, effectively copying all the contents of one hard drive to another. This process allows you to transfer all data (including the operating system and installed programs) from one hard drive to another without having to reinstall and configure all your software.
To do this, select the source and destination disks and then click 'Start'.
Please note that starting the clone process will delete all data on the destination disk and cannot be recovered.

Options
Settings
Set the language.
Available languages: German, English, Polish, France, Hungary, Simplified Chinese, Traditional Chinese, Korean, Slovak, Indonesian, Czech, Greek, Romanian, Hindi, Italian, Netherlands, Portuguese, Spanish, Turkish, Japan, Arabic, and Russian.
Jump to Dashboard on Startup - Specify whether HDCleaner opens with the overview page or the last opened page.
Specify whether files older than 24 hours are only deleted from the Recycle Bin.
Specify whether files older than 24 hours are only deleted from the Temp folder.
Specify whether files older than 10 days are only deleted from the SoftwareDistribution folder.
Specify whether HDCleaner should automatically check for HDCleaner updates.
Ignore User Account Control Warning (UAC) - For security reasons, a warning message appears before many system changes and program launches, which must be confirmed. You can disable this User Account Control prompt for HDCleaner.
Show Warnings - Some plugins display warnings that indicate the consequences of activating them. You can also disable these warnings.
System Clean Update Time - Specify the update time for monitoring System Clean.
Optimize Memory Update Time - Set the update time for memory optimization monitoring.
Specify how HDCleaner deletes files during plugin cleaning:
-Deletes files, not the Recycle Bin
-Deletes files to the Recycle Bin
-Deletes files (see 'Deleting Data')
When Windows starts, HDCleaner should:
-Do nothing
-Start cleanup and exit HDCleaner
-Start cleanup and minimize HDCleaner to the system tray
Specify whether monitoring:
-Displays large notification windows in the system tray
-Enables sound for notifications
-Set the notification time in seconds
Backup Center:
HDCleaner can create backups for the following modules:
Registry Cleaner, Remove Unnecessary Files, Autorun Manager, Scan Registry, and PluginCleaner (registry entries only).
You can easily restore these backups if necessary.
Ignore List
Specify files, folders, and registry values ​​that should not be removed during the cleaning process. Wildcards (e.g., *Software*) are allowed.
Include
Specify additional files and folders that should be removed during the cleaning process. Wildcards (e.g., *Software*) are allowed.
Context Menu
Extend Explorer's context menu with HDCleaner:
-Add HDCleaner to Explorer's context menu
-Add HDCleaner to the Recycle Bin's context menu
Destroy Files
If you want to destroy files, overwrite free space, delete data on partitions, or delete drives so that the data is securely deleted, you can select presets.
Pseudorandom Data
US DoD 5220.22-M (8-306. / E)
US DoD 5220.22-M (8-306. / E, C and E)
Schneier's 7 pass
Gutmann
Maintenance
Start cleaning according to a schedule - Set a schedule:
-Run at logon,
-Daily run,
-Weekly run,
-Monthly run
Under Settings, specify which browsers and plugins should be cleaned.
NOTE: For scheduling to work, the Windows Task Scheduler service must be running.
Users
Specify which user profiles HDCleaner should clean.
-Only the current user
-All user profiles
-Selected users: Specify a user and then click 'Disable user' to exclude the user profile from the cleaning process.
Available plugins
List of all plugins supported by HDCleaner Plugins

Advanced Usage
HDCleaner Command Line Parameters:
"C:\Program Files\HDCleaner\HDCleaner.exe" /debug
Running HDCleaner in debug mode creates a log file in the installation folder containing information about HDCleaner activities for troubleshooting.
Other HDCleaner Command Line Parameters:
Parameter Explanation Example
HDCleaner.exe /S This performs a silent installation of HDCleaner with default options. HDCleaner.exe /S
HDCleaner.exe /D = This installs HDCleaner in a folder other than the default. HDCleaner.exe /D=C:\DirectoryToInstall
Note: You can use multiple parameters by including them on the same line. For example,
HDCleaner.exe /S /D=C:\DirectoryToInstall
would silently install HDCleaner in the C:\DirectoryToInstall folder.
About HDCleaner INI Files:
INI files must be saved in Unicode format. Duplicate plugin names cause the program to crash.
Additional INI files must be located in the application's installation folder (usually C:\Program Files\HDCleaner).
Winapp2.ini allows you to add entries for new software that HDCleaner can clean.
In Winapp1.ini, any applications you list there replace the default applications on the Applications tab.
In Winsys1.ini, any entries listed there replace the default applications on the Windows tab.
When the application is first installed, no INI files are present by default.

LangSecRef indicates the appropriate category:
3005 = Microsoft Edge
3006 = Edge Chromium
3032 = CCleaner Browser
3033 = Vivaldi
3034 = Brave
3091 = Games
3021 = Applications
3022 = Internet
3023 = Multimedia
3024 = Utilities
3025 = Windows
3026 = Firefox
3027 = Opera
3028 = Safari
3029 = Google Chrome
3030 = Thunderbird
3031 = Windows Store
4060 = SRWare Iron
3001 = Internet Explorer
3002 = Windows Explorer
3004 = Advanced
3003 = System
4065 = ChromiumBrowser
4067 = CentBrowser
4068 = EpicBrowser
4069 = SlimJetBrowser
4070 = 7StarBrowser
4071 = AmigoBrowser
4072 = CoolNovoBrowser
4073 = CocCocBrowser
4074 = CooWonBrowser
4075 = YandexBrowser
4076 = 360Browser
4077 = KMeleon
4078 = Waterfox
4079 = Iridium
4080 = SeaMonkey
4081 = Pale Moon
Example: LangSecRef = 3003 - The application should be listed in the System category.
Section - Defines the category of the entry if the category is not listed in LangSecRef.
Any value can be specified for Section.
[MyProgram]
Section=MyLogfilesSection
DetectFile=%AppData%\MyProgram
FileKey1=%AppData%\MyProgram|logfile.* - deletes every file named logfile
DetectFile = file or folder to detect a program by file or folder
Detect = registry key to detect a program by the presence of a registry key
FileKeyX = specifies the files or folders to be deleted
File mask options:
| - You can use the pipe symbol to separate the file mask options
*. * - deletes all files in this folder. Example: %ProgramFiles%\MyFolder|*. *
RECURSE - deletes subfolders and their contents. Example: %ProgramFiles%\MyFolder|*. *|RECURSE
REMOVESELF - like RECURSE, but also deletes the folder and all its contents. Example: %ProgramFiles%\MyFolder|*.*|RECURSEREMOVESELF (My Folder will be deleted)
*.fileextension; - deletes all files in the folder with the specified extension. Example: *.txt
You can also clean specific files - Example: myfile.txt
ExcludeKey - Used to exclude a file, directory, or registry path from cleaning.
ExcludeKey1=FILE|%WinDir%\System32\|myfile.txt excludes the deletion of myfile.txt.
ExcludeKey2=REG|HKCU\Software\MyRegKey prevents the MyRegKey key from being deleted from the registry.
ExcludeKey3=PATH|%WinDir%\System32\|*.dll excludes the deletion of all DLL files.
RegKeyX = Specifies the registry keys or values ​​to be cleaned.
Registry keys are HKCU (HKEY_CURRENT_USER), HKLM (HKEY_LOCAL_MACHINE), etc.
Registry mask options:
| - You can use the pipe symbol to delete a specific value from a registry key.
Examples:
[MyProgram]
LangSecRef=3021
DetectFile=%AppData%\MyProgram
Default=False
FileKey1=%AppData%\MyProgram|logfile.* - deletes every file named logfile
FileKey2=%AppData%\MyProgram\MySubFolder|*.log;*.txt|RECURSE - recursively deletes all log and TXT files
[MyRegistryKey]
LangSecRef=3021
Detect=HKCU\Software\MyRegistryKeyToDelete
Default=False
RegKey1=HKCU\Software\MyRegistryKeyToDelete|valuetoDelete - deletes the registry value valuetoDelete
RegKey2=HKCU\Software\MyRegistryKeyToDelete\RegKeyToDelete - deletes registry keys RegKeyToDelete
To add Chromium-based browsers, portable Chromium-based browsers, Mozilla-based browsers, or ThunderbirdPortable to HDCleaner:
Create an INI file named AddedBrowsers.ini in Unicode format in the installation folder. The entries must have the following format:
[Name of the Chromium (or Mozilla or ThunderbirdPortable)-based browser *]
PathExeFile=This is the browser's EXE file name
PathUserDataDefault=Path to the default user data folder
Type=CHROME( or MOZILLA or THUNDERBIRD)
Examples:
[GoogleChromePortable*]
PathExeFile=C:\portable\GoogleChromePortable\App\Chrome-bin\chrome.exe
PathUserDataDefault=C:\portable\GoogleChromePortable\Data\profile
Type=CHROME
[IronPortable*]
PathExeFile=C:\portable\IronPortable\App\Iron\Iron.exe
PathUserDataDefault=C:\portable\IronPortable\Data
Type=CHROME
[Fire foxPortable*]
PathUserDataDefault=C:\portable\FirefoxPortable\Data\profile
PathExeFile=C:\portable\FirefoxPortable\App\Firefox64\Firefox.exe
Type=MOZILLA
[K-MeleonPortable*]
PathUserDataDefault=C:\portable\K-MeleonPortable\Data\profile
PathExeFile=C:\portable\K-MeleonPortable\App\K-Meleon\K-Meleon.exe
Type=MOZILLA
[ThunderbirdPortable *]
PathUserDataDefault=E:\Software\ThunderbirdPortable\Data\profile
PathExeFile=E:\Software\ThunderbirdPortable\App\Thunderbird\Thunderbird.exe
Type=THUNDERBIRD

Cookies
A cookie is a small text file that a web server stores on a user's computer via the browser. It contains information about a website visit, such as the duration of the visit, which page was visited, or the visitor's input.
Online shops use cookies to create a virtual shopping cart into which the customer places their items. Customers can still browse the store for products at any time. In these cases, the use of cookies saves time and money. Cookies also make it possible to log a user's usage habits and create user profiles.
When you run the cleanup, HDCleaner deletes all cookies for all your web browsers (Internet Explorer, Mozilla Firefox, Safari, Opera, etc.) by default, except for those in the 'Keep cookies' column, which is located in 'Manage cookies...'.
To save specific cookies on your PC:
In 'Cleanup', click 'Manage Cookies...'. Select the cookies you want to keep, then right-click 'Keep Cookies'.

Installer Command Line
HDCleaner.exe /si This performs a silent installation with default options. (quiet)
HDCleaner.exe /Dir= Replace the default folder with a custom installation path.

Additional parameters
/re Create a system restore point
/st Create Start menu entries
/de Create a desktop shortcut
/la Start the program after installation
/up Automatically checks for updates
/us Install for all users
/co Create context menu entries
/lg Installs with a language file identified by its ID (HDCleaner.exe /lg=lang_en)
HDCleaner.exe /si /dir=C:\DirectoryToInstall /re /st
Would silently install HDCleaner.exe in the C:\DirectoryToInstall folder, create a system restore point, and create Start menu entries

ID for language file IDs
lang_de = German
lang_en = English
lang_fr = French
lang_es = Spanish
lang_cs = Simplified Chinese
lang_nl = Dutch
lang_ct = Traditional Chinese
lang_jp = Japanese
lang_ko = Korean
lang_it = Italian
lang_ru = Russian
lang_bg = Bulgarian
lang_pl = Polish
lang_hu = Hungarian
lang_pt = Portuguese
lang_hi = Hindi
lang_tr = Turkish
lang_ar = Arabic
lang_sl = Slovenian
lang_id = Indonesian
lang_cz = Czech
lang_gr = Greek
lang_ro = Romanian
lang_sk = Slovak