The MAC operating system is a computer operating system developed by Apple Inc. It is a closed source, proprietary system with a focus on security and stability. MAC OS is based on a UNIX foundation and provides a graphical user interface (GUI) similar to that of other contemporary operating systems. It was first released in 1984 and has been updated several times since then.
The MAC OS file system is a computer file system that is used to store and organize files on a computer. It is a hierarchical file system that uses a directory structure to store files. The MAC OS file system is based on a Unix file system.