What is the operating system structure?

Most of the commercial systems do not have a well-defined structure, Operating systems are small, simple and limited systems. MS-DOS is a simple structure of operating system only limited users can use operating system for a particular purpose.

Example

MS-DOS

Given below is the diagram of MS-DOS −

The above simple structure of the OS is generally used for desktop computers and here the user is able to use different operations on this type of OS.

Interfaces and levels of functionality are not well separated. Application programs are able to access I/O routines to write directly to the display and disk drivers.

So, MS-DOS is vulnerable to malicious programs, causing entire system crashes when the user program fails.

Let us discuss the structure and operation of the OS in detail.

One of the important concepts of an OS is the ability to multiprogram.

There are different types of operations that OS can do and all the operations are used for a specific task because without OS instructions input and output cannot perform any task.

The setup jobs in memory can reside on disk and wait for the collection of main memory.

The Operating system is using a structure because without structure it cannot work as it is involved like CPU, disk control, USB control, graphics control, memory control and all these are connected to the OS with the help of a structure.

Operating system operation

The different types of operations are storage operation, I/O operation, process management operation, file management operation.

These operations are nothing but the programs that are used by the OS and all these programs are necessary.

Operating system structure is shown below −