To help humans keep track of directories and files, the file management system lets users nest directories inside of other directories in a hierarchical manner. For that reason, a hard drive can have many directories. Although as a practical matter there isn’t a limit to the number of files you can put in a directory, it is difficult to manage a large number of files in a single directory. – all of the information we saw in the Get Info box in the first lesson. That index also keeps track of the file names, sizes, modified dates, etc. In the first lesson, a directory was described as an index telling the computer where the data included in files were located on the hard drive of your computer. The operating system has a built-in file management system that helps you keep track of where files are located. Fortunately, we generally don’t have to worry about that. The operating system works with the hard drive of your computer to manage a complex system for tracking the location of all of the bytes of data stored there. Reminder: “directory” means the same thing as “folder” The directory tree Click for the Windows version of this page Understanding my computer - Lesson 2: Directories
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