System Files

File Extension File Type Popularity
.TA Sony Firmware File
.TAR.MD5 Android System File
.TCO2 TI-Nspire CX II Operating System File
.TDZ Drobo Firmware File
.THEME Microsoft Plus! Desktop Theme
.THUMBNAILS Android Thumbnails Folder
.TIMER Systemd Unit Configuration File
.TRASHES macOS USB Flash Drive Trash Folder
.TRASHINFO Linux Trash Metadata File
.TRX_DLL Windows Startup File
.UCE Windows UCE System File
.VGA VGA Display Driver
.VGD Generic CADD VGA Driver
.VXD Virtual Device Driver
.VX_ Compressed Virtual Device Driver File
.WDF Windows Driver Foundation File
.WDGT Dashboard Widget
.WEBPNP Web Point and Print File
.WER Windows Error Report
.WGZ S60 Web Runtime Widget Package
.WLU Windows Legacy Update
.WPH Phoenix BIOS File
.WPX Printer Description File
.XFB Xserve RAID Firmware Binary File
.XRM-MS Microsoft Security Certificate
.ZONE.IDENTIFIER Windows Zone Identifier File
.0 Shared Library Link File
.000 Indexing Service Data File
.208 ASUS Notebook BIOS 208 Update File
.386 Windows Virtual Device Driver
.4FS Puppy Linux Save State File
.73U TI-73 Explorer Operating System File
.89U TI-89 Titanium Operating System File
.8CU TI-84 Plus C Operating System File
.8XU TI-83 and TI-84 Plus Operating System File
.ADM Administrative Template File
.ADMX Group Policy Administrative Template File
.ADV Audio Driver File
.AML ACPI Machine Language File
.ANI Windows Animated Cursor
.AOS ARCHOS PCtablet Firmware File
.ASEC Android Secure Application File
.BASHRC Bash Non-Interactive Login Shell File
.BASH_HISTORY Bash History File
.BASH_PROFILE Bash Interactive Login Shell File
.BCD Windows Boot Configuration Data File
.BK1 Windows Indexing Service File
.BK2 Windows Indexing Service Data File
.BLF CLFS Base Log File
.BMK Help Bookmarks
.BOM Mac OS X Bill of Materials File
.BUD Binary Printer Description File
.C32 Syslinux COM32 Module
.CAB Windows Cabinet File
.CAP ASUS BIOS Update File
.CGZ Linux Drivers Archive
.CHG Windows Net Logon File
.CHK Netgear Router Firmware File
.CLB COM+ Catalog File
.CLG Windows Catalog File
.CM0012 Configuration Management File
.CNT Help Contents File
.CONFIGPROFILE Apple Configuration Profile
.CPI Codepage Information File
.CPL Windows Control Panel Item
.CPQ Compaq OEM Disc Configuration File
.CPR Windows Phone Display Settings File
.CRASH Mac OS X Crash Log File
.CUR Windows Cursor
.DESKLINK Desktop Shortcut
.DESKTHEMEPACK Windows 8 Desktop Theme Pack File
.DEV Windows Device Driver File
.DIAGCAB Troubleshooting Pack Cabinet File
.DIAGCFG Troubleshooting Pack Configuration File
.DIAGPKG Troubleshooting Pack File
.DIT Active Directory Information Tree File
.DLL Dynamic Link Library
.DLX Renamed DLL File
.DMP Windows Memory Dump
.DRPM Delta RPM File
.DRV Device Driver
.DSS DCC Active Designer File
.DVD DOS Device Driver
.EBD Windows EBD System File
.EDJ Enlightenment Theme File
.EFI Extensible Firmware Interface File
.EFIRES EFI Image File
.ELF Executable and Linkable Format File
.EMERALD Emerald Theme
.ESCOPY ES File Explorer File Manager Temporary File
.ETL Microsoft Event Trace Log File
.EVT Windows Event Viewer Log File
.EVTX Windows 7 Event Log File
.FFA Find Fast Status File
.FFL Find Fast Document List
.FFO Find Fast Document Properties Cache
.FFX Microsoft Find Fast Index
.FID Microsoft Catalog Indexing Service File
.FIRM Boot9Strap 3DS Firmware File
.FL1 Lenovo BIOS Update File
.FOTA Firmware Over-the-Air File
.FPBF Mac OS X Burn Folder
.FTF FlashTool Firmware File
.FTG Full Text Group
.FTS Full Text Search
.FX ReadyBoot Trace File
.GMMP WCS Gamut Map Model Profile
.GRL Windows Update Status File
.GROUP Windows Contacts Group File
.GRP Windows Program Manager Group
.H1S Windows Assistance Platform Help File
.HCD Samsung Android Firmware File
.HDMP Windows Heap Dump
.HELP Mac OS X Help Book
.HHC HTML Help Table of Contents
.HHK HTML Help Index
.HLP Windows Help File
.HPJ Help Project File
.HSH Windows Catalog Search Index File
.HTT Hypertext Template File
.HVE Windows Registry Hive File
.ICL Windows Icon Library File
.ICNS macOS Icon Resource File
.ICO Icon File
.IDI EVA Controller Event Log
.IDX Index File
.IFW INTUS Firmware File
.IM4P IMG4 Payload File
.IME Windows Input Method Editor File
.IMG3 iPhone IMG3 File
.INF_LOC Windows Driver Information Cache File
.INS Internet Naming Service File
.INTERNETCONNECT Apple Internet Connect Document
.ION File Description File
.IP IconPackager Theme File
.IPOD Rockbox Firmware File
.IPTHEME IconPackager Raw Theme File
.ITEMDATA-MS Windows 8 Start Screen Item Data File
.ITS Internet Document Set
.IUS InfoTMIC Firmware Update File
.JOB Windows Task Scheduler Job File
.JPN Windows Japanese Noise-Word List File
.KBD Keyboard Layout Script
.KDZ LG Mobile Device Firmware
.KEXT Mac OS X Kernel Extension
.KEY Security Key
.KO Linux Kernel Module File
.KOR Windows Korean Noise-Words List File
.KS Kickstart File
.LFS Samsung Phone params.lfs File
.LIBRARY-MS Windows Library Description File
.LNK Windows Shortcut
.LOG1 Windows Registry Hive Log File
.LOG2 Windows Registry Hive Log 2 File
.LPD LPD Daemon Print Permissions File
.LPD Lookout Protocol Driver File
.LST GRUB Boot List File
.MANIFEST Windows Application Manifest File
.MAPIMAIL Send To Mail Recipient
.MBR Master Boot Record File
.MDMP Windows Minidump
.MEM Parallels Desktop Memory Dump File
.MENU macOS Menu Extra
.MI4 Audio Player Firmware File
.MLC Microsoft Language Interface Pack
.MOBILECONFIG Apple Mobile Configuration File
.MOD GRUB Module
.MSC Microsoft Management Console Snap-in Control File
.MSP Windows Installer Patch
.MSSTYLES Windows XP Style
.MUI Multilingual User Interface File
.MUM Windows Vista Update Package
.MUN Windows System Resource Archive
.MYDOCS Send To My Documents
.NB0 Device Boot Loader Image
.NBH ROM Update Utility Image File
.NETWORKCONNECT Apple Network Connect Document
.NFO System Information File
.NLS Microsoft National Language Support File
.NT Windows NT Startup File
.NTFS NTFS Partition File
.ODEX Optimized Dalvik Executable
.PAT DiskStation Manager Installation File
.PCK System Center Configuration Manager Package File
.PDR Windows Port Driver
.PFX PKCS #12 Certificate File
.PK2 Silkroad Online Game Data File
.PNF Precompiled INF File
.POL Windows Policy File
.PPD PostScript Printer Description File
.PPM Post Programmable Memory File
.PREFPANE Mac OS X System Preference Pane
.PRO TurboIntegrator Process Definition File
.PROFILE Bash Shell Profile
.PROP Android Build Properties File
.PROVISIONPROFILE Apple Provision Profile
.PRT Printer Driver File
.PS1 Microsoft Indexing Service Data File
.PWL Windows Password List
.QKY Quirky Kernel
.QVM Q Virtual Machine
.RC2 Samsung Mobile Device Firmware File
.RCO PlayStation Portable Resource File
.RCV BIOS Recovery File
.REG Registry File
.REGLNK Registry Editor Shortcut File
.REGTRANS-MS Registry Transaction Log File
.RFW Rockchip Firmware File
.RMT Router Firmware File
.RS Windows Rating System File
.RUF Samsung DVD and Blu-ray Player Firmware File
.RVP Sharp Blu-ray Player Firmware File
.SAVEDSEARCH Spotlight Saved Search
.SAVER Mac OS X Screen Saver
.SB Slax Bundle
.SBN Cisco IP Phone Firmware File
.SCF Windows Explorer Command
.SCR Windows Screensaver
.SDB Custom Application Compatibility Database
.SDT Siemens Desktop Theme File
.SEARCHCONNECTOR-MS Windows Search Connector File
.SHD Windows Print Job Shadow File
.SHSH iPhone/iPod Touch SHSH Blob File
.SPL Windows Print Spool File
.SQM Service Quality Monitoring File
.STR Windows Screensaver File
.SWP Swap File
.SYS Windows System File
.SYS Motorola Driver File
.SPX System Profiler XML Report
.PIT Samsung Phone Firmware File
.ANN Help Annotations
.CI Windows Content Indexer Catalog File
.PS2 Microsoft Search Catalog Index File
.CHT Windows Chinese Traditional Noise-Word List File
.PID Creative Driver File
.ME Puppy Linux Partition Flag File
.SFCACHE ReadyBoost Cache File
.SERVICE Systemd Service Unit File
.CM0013 Samsung Smart TV Index File
.DIMAX DiMAX Firmware Image File
.DTHUMB Android Data Thumbnail
.CANNEDSEARCH Apple Predefined Search
.MUI_CCCD5AE0 Hid User Library
.ADML Group Policy Language-Specific Administrative Template
.MBN Multi Boot Image
.SCHEMAS GConf Schema Definition File
.THA Windows Thai Noise-Words List File
.PRINTEREXPORT Windows Printer Migration File
.ATAHD ATA Hard Drive Flag File
.MSSTYLE Windows XP Unsigned Style
.METADATA_NEVER_INDEX Spotlight Never Index File
.CHS Windows Chinese Noise-Word List File
.SO.0 Unix Shared Library File
.DYC Xerox Printer Driver Configuration File
.DEVICEMETADATA-MS Device Metadata Package
.SCAP EFI Firmware File
.PLASMOID Plasma Widget
.CDMP WCS Device Model Profile
.DOCK Mac OS X Dock Extra
.PANIC Kernel Panic File
.SIN Sony Xperia Firmware File
.MMV Magnex Firmware File
.LM Language Model File
.NLT Windows Transliteration File
.DUB Windows Spelling Dictionary Identifier
.DIFFBASE Windows Diagnostics Tracking Diffbase File
.VDEX Validated Dalvik Executable File
.LOCALIZED macOS Directory Localization File
.KWI Toyota Entune Update File
.B83 TI-83 Premium CE Bundle Image
.B84 TI-84 Plus CE Bundle Image

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