系统目录或文件
| 目录 | 备注 |
|---|---|
| WINDOWS/$NtUninstall*$ | 系统补丁程序的卸载程序 |
| WINDOWS/Installer | 安装文件 |
| WINDOWS/inf | 驱动文件 |
| WINDOWS/Help | 帮助文件 |
| WINDOWS/Fonts | 字体文件 |
| WINDOWS/Temp | 临时文件 |
| WINDOWS/WinSxS | 系统文件的不同版本备份 |
| WINDOWS/Downloaded Installations | ... |
| WINDOWS/RegisteredPackages | ... |
| Documents and Settings/*/Local Settings/Cookies | |
| Documents and Settings/*/Local Settings/Application Data | 应用程序相关 |
可以删除的文件：
WINDOWS/$*$ WINDOWS/*.bmp Documents and Settings/*/Local Settings/Temp/* Documents and Settings/*/Local Settings/Temporary Internet Files/*