All you need is a pointer to the root of the directory tree (physically speaking, that would be to the first inode in the system), and from there you can access any other files on that disk partition.

In the Linux environment, the file system acts as a backbone, orchestrating the systematic storage and retrieval of data. It is a hierarchical structure that outlines how data is organized, stored, ...

A file system is a major component of the operating system (OS). Applications command the OS to input and output data, and the file system reads and writes the sectors on the storage drive.