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used as a root filesystem. Many different types of storage exist, including magnetic, magneto-optical, optical, and semiconductor (solid-state) drives. Before any of them can be used for storage, the means by which information is read and written must be organized and knowledge of this must be
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In many situations, file systems other than the root need to be available as soon as the operating system has booted. All Unix-like systems therefore provide a facility for mounting file systems at boot time. System administrators define these file systems in the configuration file
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will automatically mount a file system when a reference is made to the directory atop which it should be mounted. This is usually used for file systems on network servers, rather than relying on events such as the insertion of media, as would be appropriate for removable media.
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In general, the process of mounting comprises the operating system acquiring access to the storage medium; recognizing, reading, and processing file system structure and metadata on it before registering them to the
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available to the operating system. The organization is called a filesystem. Each different filesystem provides the host operating system with
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so that it knows how to read and write data. When the medium (or media, when the filesystem is a volume filesystem as in
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The location in the VFS to which the newly mounted medium was registered is called a "
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