What Is the “Normal” File Hierarchy in Windows?

The video begins by explaining the fundamental components of the Windows file hierarchy: drives, folders, and files. Drives (also known as volumes or partitions) represent physical storage devices, typically identified by letters like C: or D:. These drives contain folders, which are used to organize data, much like physical file folders. Inside folders are files, which are the actual data units, often identified by file extensions (e.g., .jpg, .docx) that indicate their type.

The file system is conceptualized as a tree structure, visible in Windows File Explorer, where 'This PC' is the base, drives are main branches, and folders are sub-branches. Files are considered the 'leaves' of this tree. For precise referencing, 'path notation' is used, which includes the drive letter, followed by a colon, then folders separated by backslashes, and finally the file name (e.g., C:\Users\Documents\test.pdf).

The system drive, 'C:', is where Windows is typically installed. Key folders include 'Program Files' (and 'Program Files (x86)') for installed applications, and 'Windows' for the operating system's own files. The 'Users' folder is particularly important as it contains data associated with each user account on the machine.

Inside 'C:\Users\', each user account has its own folder (often called a 'home folder'), identified by their login ID. For example, 'C:\Users\<username>'. These folders contain standard subfolders like 'Desktop', 'Documents', 'Downloads', 'Music', 'Pictures', and 'Videos'. There's also a 'Public' folder for sharing content between users. The video also notes the presence of a 'OneDrive' folder if it's installed and active.

Windows tries to simplify navigation through features like 'Quick Access' shortcuts in File Explorer. While convenient, these shortcuts can obscure the actual location of folders on the disk, making it difficult for users to understand the underlying file hierarchy. The video clarifies that these shortcuts dynamically point to the correct, user-specific location (e.g., C:\Users\<current_username>\Downloads).

The 'AppData' folder, located within each user's home folder, is hidden by default and meant for applications to store their data. It contains 'Local', 'LocalLow', and 'Roaming' subfolders. 'Roaming' data is intended to sync across multiple machines in a corporate environment, while 'Local' and 'LocalLow' data stays on the local machine. The video notes that applications are often inconsistent in their use of these folders, and for most home users, the distinction is not critical.