System Files

The System Files category includes files related to Mac, Windows, and Linux operating systems. Some examples include system libraries, icons, themes, and device drivers. Files output by the system are also included in this category.

Common system file extensions include .DLL, .DRV, .SYS, and .CAB.

Extension File Type Popularity
.RMTRouter Firmware File
.ADMXGroup Policy Administrative Template File
.VGAVGA Display Driver
.AMLACPI Machine Language File
.REGRegistry File
.CURWindows Cursor Image
.REGTRANS-MSRegistry Transaction Log File
.CLBCOM+ Catalog File
.ANIWindows Animated Cursor
.WDGTDashboard Widget
.SERVICESystemd Service Unit File
.NTWindows NT Startup File
.ICNSmacOS Icon Resource
.DLLDynamic Link Library
.DESKTHEMEPACKWindows 8 Desktop Theme Pack File
.ICONPACKAGEIconPackager Theme File
.SEARCHCONNECTOR-MSWindows Search Connector File
.PK2Silkroad Online Game Data File
.HVEWindows Registry Hive File
.DVDDOS Device Driver
.DMPWindows Memory Dump
.FTFFlashTool Firmware File
.VX_Compressed Virtual Device Driver File
.HIVWindows Registry Hive File
.THEMEMicrosoft Plus! Desktop Theme
.QVMQ Virtual Machine
.LNKWindows Shortcut
.MDMPWindows Minidump
.EBDWindows EBD System File
.HTTHypertext Template
.ELFExecutable and Linkable Format File
.SYSWindows System File
.SFCACHEReadyBoost Cache File
.PCKSystem Center Configuration Manager Package File
.ICOIcon File
.ASECAndroid Secure Application File
.FIRMBoot9Strap 3DS Firmware File
.NFOSystem Information File
.MANIFESTWindows Application Manifest File
.DESKLINKDesktop Shortcut
.BASH_HISTORYBash History File
.IONFile Description File
.PROPAndroid Build Properties File
.MUIMultilingual User Interface File
.ETLMicrosoft Event Trace Log File
.ZONE.IDENTIFIERWindows Zone Identifier File
.LMLanguage Model File
.000Indexing Service Data File
.TIMERSystemd Unit Configuration File
.CGZLinux Drivers Archive
.WLUWindows Legacy Update
.H1SWindows Assistance Platform Help File
.RC1Samsung Mobile Device Firmware File
.MENUmacOS Menu Extra
.MAPIMAILSend To Mail Recipient
.BASHRCBash Non-Interactive Login Shell File
.EDJEnlightenment Theme File
.PWLWindows Password List
.PREFPANEMac OS X System Preference Pane
.DATWindows Registry Hive File
.BINRouter Firmware File
.CM0013Samsung Smart TV Index File
.MSCMicrosoft Management Console Snap-in Control File
.SCRWindows Screensaver
.EFIExtensible Firmware Interface File
.CABWindows Cabinet File
.FXReadyBoot Trace File
.LOG1Windows Registry Hive Log File
.ADMAdministrative Template File
.INF_LOCWindows Driver Information Cache File
.LFSSamsung Phone params.lfs File
.MLCMicrosoft Language Interface Pack
.SDBApplication Compatibility Database
.C32Syslinux COM32 Module
.DRPMDelta RPM File
.ITEMDATA-MSWindows 8 Start Screen Item Data File
.FOTAFirmware Over-the-Air File
.MSSTYLESWindows XP Style
.MOBILECONFIGApple Mobile Configuration File
.3FSPuppy Linux Save State File
.PITSamsung Phone Firmware File
.SYSMotorola Cell Phone Driver
.TRX_DLLWindows Startup File
.73UTI-73 Explorer Operating System File
.PNFPrecompiled INF File
.BASH_PROFILEBash Interactive Login Shell File
.WEBPNPWeb Point and Print File
.0Android CA Digital Certificate
.LIBRARY-MSWindows Library Description File
.PDRWindows Port Driver
.SBNCisco IP Phone Firmware File
.HHKHTML Help Index
.208ASUS Notebook BIOS 208 Update File
.BCDWindows Boot Configuration Data File
.0Shared Library Link File
.DITActive Directory Information Tree File
.MBRMaster Boot Record File
.INSInternet Naming Service File
.PLASMOIDPlasma Widget
.NLTWindows Transliteration File
.IMG3iPhone IMG3 File
.MUI_CCCD5AE0Hid User Library
.DIAGCABTroubleshooting Pack Cabinet File
.DTHUMBAndroid Data Thumbnail
.DRVDevice Driver
.CIWindows Content Indexer Catalog File
.HDMPWindows Heap Dump
.NLSMicrosoft National Language Support File
.MSPWindows Installer Patch
.POLWindows Policy File
.SDTSiemens Desktop Theme File
.PPDPostScript Printer Description File
.NB0Device Boot Loader Image
.CATWindows Catalog File
.CPLWindows Control Panel Item
.WDFWindows Driver Foundation File
.SAVEDSEARCHSpotlight Saved Search
.CANNEDSEARCHApple Predefined Search
.SBFAndroid System File
.1Unix Section 1 Manual Page
.VXDVirtual Device Driver
.SHDWindows Print Job Shadow File
.CM0012Configuration Management File
.HLPWindows Help File
.JOBWindows Task Scheduler Job File
.PATDiskStation Manager Installation File
.SQMService Quality Monitoring File
.AXDirectShow Filter
.8CUTI-84 Plus C Operating System File
.WPXPrinter Description File
.CNTHelp Contents File
.MBNMulti Boot Image
.CRASHMac OS X Crash Log File
.KEXTMac OS X Kernel Extension
.FPBFMac OS X Burn Folder
.2FSPuppy Linux Save State File
.IDXIndex File
.8XUTI-83 and TI-84 Plus Operating System File
.IMEWindows Input Method Editor File
.PRFWindows System File
.CONFIGPROFILEApple Configuration Profile
.PS2Microsoft Search Catalog Index File
.LOG2Windows Registry Hive Log 2 File
.DATABASE_UUIDAndroid Stale Thumbnails Identifier
.ODEXOptimized Dalvik Executable
.ADMLGroup Policy Language-Specific Administrative Template
.SCHEMASGConf Schema Definition File
.EMERALDEmerald Theme
.CPQCompaq OEM Disc Configuration File
.NTFSNTFS Partition File
.PANICKernel Panic File
.SWPSwap File
.SHSHiPhone/iPod Touch SHSH Blob File
.CHGWindows Net Logon File
.TDZDrobo Firmware File
.JOURNALLinux Journald Event Log
.LEXSpelling Dictionary File
.89UTI-89 Titanium Operating System File
.UTVSmartCast TV Firmware Update
.B84TI-84 Plus CE Bundle Image
.FFXMicrosoft Find Fast Index
.386Windows Virtual Device Driver
.BLFCLFS Base Log File
.LSTGRUB Boot List File
.WERWindows Error Report
.AOSARCHOS PCtablet Firmware File
.KOLinux Kernel Module File
.DEVWindows Device Driver File
.HCDSamsung Android Firmware File
.SAVERMac OS X Screen Saver
.3Unix Section 3 Manual Page
.MUMWindows Vista Update Package
.PROFILEBash Shell Profile
.EVTWindows Event Viewer Log File
.HHCHTML Help Table of Contents
.ADVAudio Driver File
.CHKNetgear Router Firmware File
.DEVICEMETADATA-MSDevice Metadata Package
.THAWindows Thai Noise-Words List File
.STRWindows Screensaver File
.DIMAXDiMAX Firmware Image File
.IM4PIMG4 Payload File
.KDZLG Mobile Device Firmware
.KWIToyota Entune Update File
.GROUPWindows Contacts Group File
.PROVISIONPROFILEApple Provision Profile
.PRINTEREXPORTWindows Printer Migration File
.METADATA_NEVER_INDEXSpotlight Never Index File
.FLGPuppy Linux Partition Flag File
.BMKWindows Help Bookmarks
.NETWORKCONNECTApple Network Connect Document
.PIDCreative Driver File
.RUFSamsung DVD and Blu-ray Player Firmware File
.NBHROM Update Utility Image File
.FFOFind Fast Document Properties Cache
.GRPWindows Program Manager Group
.BOMMac OS X Bill of Materials File
.ATAHDATA Hard Drive Flag File
.MI4Audio Player Firmware File
.PRTPrinter Driver File
.PROTurboIntegrator Process Definition File
.KBDKeyboard Layout Script
.EVTXWindows 7 Event Log File
.MYDOCSSend To My Documents
.THUMBNAILSAndroid Thumbnails Folder
.ICLWindows Icon Library File
.KSKickstart File
.SPLWindows Print Spool File
.CPICodepage Information File
.XRM-MSMicrosoft Security Certificate
.CPRWindows Phone Display Settings File
.SEFWSecure Element Firmware
.RCVBIOS Recovery File
.4Unix Section 4 Manual Page
.TRASHINFOLinux Trash Metadata File
.FTRIRIX File Type Rules File
.IMG2iPhone Firmware Image
.CHTWindows Chinese Traditional Noise-Word List File
.RFWRockchip Firmware File
.OZIPOPPO Smartphone Firmware Update
.CHSWindows Chinese Noise-Word List File
.WGZS60 Web Runtime Widget Package
.SINSony Xperia Firmware File
.2Unix Section 2 Manual Page
.DIAGPKGTroubleshooting Pack File
.XFBXserve RAID Firmware Binary File
.MEMParallels Desktop Memory Dump File
.SPRXSigned PlayStation Relocatable Executable
.IFWINTUS Firmware File
.UCEWindows UCE System File
.KCmacOS Kernel Extension Boot File
.HPJHelp Project File
.ISDATAIcon Services Data
.GMMPWCS Gamut Map Model Profile
.MMVMagnex Firmware File
.TRASHChromeOS Trash Storage
.TBRESMicrosoft Store TokenBroker Cache File
.MUNWindows System Resource Archive
.DLXRenamed DLL File
.BK2Windows Indexing Service Data File
.ESCOPYES File Explorer File Manager Temporary File
.SCFShell Command File
.TRASHESmacOS USB Flash Drive Trash Folder
.SO.0Unix Shared Library File
.PS1Microsoft Indexing Service Data File
.GRLWindows Update Status File
.SCAPEFI Firmware File
.DOCKMac OS X Dock Extra
.DSSDCC Active Designer File
.KEYAndroid Passcode File
.MEPuppy Linux Partition Flag File
.LPDLPD Daemon Print Permissions File
.FFAFind Fast Status File
.FL1Lenovo BIOS Update File
.MSSTYLEWindows XP Unsigned Style
.BK1Windows Indexing Service File
.IPODRockbox Firmware File
.FTSWindows Help Full Text Search Index
.VDEXValidated Dalvik Executable File
.IUSInfoTMIC Firmware Update File
.RC2Samsung Mobile Device Firmware File
.JETKEYiOS Support Jet File
.DICWindows 10 Custom Spelling Dictionary
.IDIEVA Controller Event Log
.SBSlax Bundle
.VGDGeneric CADD VGA Driver
.RSWindows Rating System File
.PPMPost Programmable Memory File
.DIAGCFGTroubleshooting Pack Configuration File
.WPHPhoenix BIOS File
.KLAndroid Key Layout File
.PUSH_DEVICEIDAndroid Device Identification File
.HSHWindows Catalog Search Index File
.5Unix Section 5 Manual Page
.6Unix Section 6 Manual Page
.7Unix Section 7 Manual Page
.RCOPlayStation Portable Resource File
.IPTHEMEIconPackager Raw Theme File
.LPDLookout Protocol Driver File
.QKYQuirky Kernel
.8Unix Section 8 Manual Page
.DYCXerox Printer Driver Configuration File
.BUDBinary Printer Description File
.LOCALIZEDmacOS Directory Localization File
.FIDMicrosoft Catalog Indexing Service File
.JPNWindows Japanese Noise-Word List File
.TASony Firmware File
.SELFSigned Executable and Linkable Format
.INTERNETCONNECTApple Internet Connect Document
.SPXSystem Profiler XML Report
.ITSInternet Document Set
.DUBWindows Spelling Dictionary Identifier
.B83TI-83 Premium CE Bundle Image
.KORWindows Korean Noise-Words List File
.ROKURoku TV Firmware Update
.BBFWApple Baseband Firmware Update
.XGFXiegu G Series Firmware Update
.TCO2TI-Nspire CX II Operating System File
.MRMMIUI Theme Metadata
.MRCMIUI Theme Content Package
.FTGFull Text Group
.TNOTI-Nspire Operating System File
.FFLFind Fast Document List
.ANNWindows Help Annotations
.REGLNKRegistry Editor Shortcut File
.HELPMac OS X Help Book
.CDMPWCS Device Model Profile
.DIFFBASEWindows Diagnostics Tracking Diffbase File
.RVPSharp Blu-ray Player Firmware File
.IM4MIMG4 Manifest