$NtUninstall$ (every system is patched, the system will automatically create such a directory, can be deleted) AppPatch (application patch backup folder, used to store the application's patch file) Config (system configuration folder, with To store some temporary configuration files of the system) CSCCursors (mouse pointer folder) Debug (system debugging folder, used to store the log files of the debugging module during system operation) Downloaded Installations (store some installation programs using Windows Installer technology, Mainly used to repair the program, etc.) Downloaded Program Files (download program folder, used to store IE-enabled ActiveX and other plug-ins) Driver Cache (drive cache folder, used to store the driver files of the system known hardware) ehomeFonts (Font folder. To install a font, just copy the font file to that directory) Help (Windows help file) ime (input information) inf (a plain text file with a specific format, the most common Application is to provide driver services for hardware devices It is recommended not to delete these files.) Installer (used to store MSI files or temporary files required for program installation) java (stores Java running components and their program files. It is not recommended to delete files) Media (sound folder, switch machine, etc.) The wav file is stored here. Minidump (small memory dump file, which records the smallest set of useful information that can help determine why the computer stopped unexpectedly.) msagent (Microsoft Assistant folder, which stores dynamic cartoon characters to help you better use the system) If you don't need it, you can delete it directly. msapps (Microsoft Application Folder.) mui (multi-language package folder for storing multi-language files.) Offline Web Pages (offline browsing files are stored here) PCHealth ( Used to store files that coordinate, configure, and manage the normal operation of the computer. PeerNetPrefetch (pre-read folder, which is used to store pre-read information of files that have been accessed by the system (this information is new information automatically generated by the system when accessed). To speed up file access, its extension is "PF". Can be deleted.) Provisi Oningpss (used to back up the system startup configuration file, generally back up the three files "Boot.ini", "System.ini" and "Win.ini", the extension is "backup". If the system is the original three If the files are damaged, you can restore them from here. It is not recommended to delete) RegisteredPackagesRegistration (registered folder, used to store related files for system COM+ or other component registration. It is not recommended to delete the file here) repair (system repair folder, used to store the configuration files needed to repair the system) Resources (system resource folder, used to store the system SHELL resource file, which we see on the desktop Topic) security (system security folder, used to store important data files of the system) ShellNewSoftwareDistributionsrchasst (search assistant folder, used to store system search assistant files, similar to msagent folder) SunSxsCaPendDelsystem (system folder, used to store system virtual Device file) system32 (stores Windows system files and hardware drivers) Tasks TEMP (system temporary folder, where all content can be deleted) twain_32 (scanner related) wbem (stores WMI test program for viewing and Change the public information model class, instance and method, etc. Do not delete) Web (similar to the "network hard disk" provided by some websites) WinSxS (store various versions of Windows XP components, reduce configuration problems caused by DLL files)