Introduction to Operating System

A building that has a weak foundation can definitely not stand long.

Similarly, if the foundation of our learning process is not strong, gradually the going gets tough.

Thus, it is very important that we learn the basics.

We all use Windows, Ubuntu and other OS, but how many among us actually know to install an operating system? Well, I did not know. It makes little sense in using something without knowing how it came into existence. So, before I explain how to install one, let’s go through some basics of OS.

What am I supposed to know before I begin??? – The Prerequisites

  • What is an Operating System?

Suppose you have a cup of ice-cream and you want to eat it. It is but obvious that you use your “hands” and with the help of a spoon you eat it. So, your “hands” helped you put the ice-cream inside your mouth.

Similarly, an operating system or OS, is a software program that enables the computer hardware to communicate and operate with the computer software. Without a computer operating system, a computer and software programs would be useless.

  • What are some of the commonly used OS?
  1. DOS (Disk Operatin System)

–          One of the first operating systems for the personal computer. You had to type all commands at the command prompt, thus not very user-friendly.

  1. Windows

– The Windows operating system, a product of Microsoft, is a GUI (graphical user interface) operating system. Thus, is user-friendly.

3.  MacOS

Macintosh, a product of Apple, has its own operating system with a GUI and WIMP features.

4.  Unix – Linux

      – (the PC version of Unix) – Unix and Linux were originally created with a command-line      interface, but recently have added GUI enhancements.

  • How many OS can be installed in a system?

Theoretically, you can install as many as that will physically fit on the drive.

Now, you might be wondering if multiple OS can be installed in a system, how many can run at a time???

Only one operating system can hold control of the computer at at time.

However, multi-booting, i.e. with virtualization, you can run any number of operating systems inside a process, but it is subject to memory, space, and realistic processor resources.

Now, a last one…

How can you determine which Operating system is installed in your computer?

It usually appears on the loading screen.

Well, that’s all for now. I shall soon add a post on “How to install Ubuntu OS” ?


Aishwarya  🙂


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