Operating System Tutorial

Operating System Tutorial Types of Operating System Evolution of Operating System Functions of Operating System Operating System Properties Operating System Services Components of Operating System Needs of the Operating System

Operating Systems

Linux Operating System Unix Operating System Ubuntu Operating System Chrome Operating Systems Fedora Operating System MAC Operating System MS Windows Operating System Solaris Operating System Cooperative Operating System CorelDRAW Operating System CentOS FreeBSD Operating Systems Batch Operating System MS-DOS Operating System Commercial Mobile Operating Systems


Difference Between Multi-programming and Multitasking Difference between C-LOOK and C-SCAN Difference between Rotational Latency and Disk Assess Time Trap vs Interrupt Difference between C-SCAN and SSTF Difference between SCAN and FCFS Difference between Seek Time and Disk Access Time Difference between SSTF and LOOK Difference between Process and Program in the Operating System Difference between Protection and Security in Operating System

How To

How to implement Monitors using Semaphores How to Install a Different Operating System on a PC


What is Kernel and Types of Kernel What is DOS Operating System What is Thread and Types of Thread What is Process Scheduler and Process Queue What is Context Switching What is CPU Scheduling What is Producer-Consumer Problem What is Semaphore in Operating System Monitors in Operating System What is Deadlock What is Paging and Segmentation What is Demand Paging What is Virtual Memory What is a Long term Scheduler What is Page Replacement in Operating System What is BSR Mode What is Convoy Effect What is Job Sequencing in Operating System Why is it critical for the Scheduler to distinguish between I/O-bound and CPU-bound programs Why is there a Need for an Operating System


Process Management Process State Scheduling Algorithm FCFS (First-come-First-Serve) Scheduling SJF (Shortest Job First) Scheduling Round-Robin CPU Scheduling Priority Based Scheduling HRRN (Highest Response Ratio Next) Scheduling Process Synchronization Lock Variable Mechanism TSL Mechanism Turn Variable Mechanism Interested Variable Mechanism Deadlock Avoidance Strategies for Handling Deadlock Deadlock Prevention Deadlock Detection and Recovery Resource Allocation Graph Banker’s Algorithm in Operating System Fixed Partitioning and Dynamic Partitioning Partitioning Algorithms Disk Scheduling Algorithms FCFS and SSTF Disk Scheduling Algorithm SCAN and C-SCAN Disk Scheduling Algorithm Look and C-Look Disk Scheduling Algorithm File in Operating System File Access Methods in Operating System File Allocation Method Directory Structure in Operating System N-Step-SCAN Disk Scheduling Feedback Queue in Operating System Contiguous Memory Allocation in Operating System Real-time Operating System Starvation in Operating System Thrashing in Operating System 5 Goals of Operating System Advantages of Operating System Advantages of UNIX Operating System Bit Vector in Operating System Booting Process in Operating System Can a Computer Run Without the Operating System Dining Philosophers Problem in Operating System Free Space Management in Operating System Inter Process Communication in Operating System Swapping in Operating System Memory Management in Operating System Multiprogramming Operating System Multitasking Operating Systems Multi-user Operating Systems Non-Contiguous Memory Allocation in Operating System Page Table in Operating System Process Scheduling in Operating System Segmentation in Operating System Simple Structure in Operating System Single-User Operating System Two Phase Locking Protocol Advantages and Disadvantages of Operating System Arithmetic operations in binary number system Assemblers in the operating system Bakery Algorithm in Operating System Benefits of Ubuntu Operating System CPU Scheduling Criteria in Operating System Critical Section in Operating System Device Management in Operating System Linux Scheduler in Operating System Long Term Scheduler in Operating System Mutex in Operating System Operating System Failure Peterson's Solution in Operating System Privileged and Non-Privileged Instructions in Operating System Swapping in Operating System Types of Operating System Zombie and Orphan Process in Operating System 62-bit operating system Advantages and Disadvantages of Batch Operating System Boot Block and Bad Block in Operating System Contiguous and Non - Contiguous Memory Allocation in Operating System Control and Distribution Systems in Operations Management Control Program in Operating System Convergent Technologies in Operating System Convoy Effect in Operating System Copy Operating Systems to SSD Core Components of Operating System Core of UNIX Operating System Correct Value to return to the Operating System Corrupted Operating System Cos is Smart Card Operating System Cosmos Operating Systems Examples Generation of Operating System Hardware Solution in Operating System Process Control Block in Operating System Function of Kernel in Operating System Operating System Layers History of Debian Operating Systems Branches and Architecture of Debian Operating Systems Features and Packages of Debian Operating Systems Installation of Operating System on a New PC Organizational Structure and Development in Debian Operating Systems User Interface in Operating System Types Of Memory in OS Operating System in Nokia Multilevel Paging in OS Memory Mapping Techniques in OS Memory Layout of a Process in Operating System Hardware Protection in Operating System Functions of File Management in Operating System Core of Linux Operating System Cache Replacement Policy in Operating System Cache Line and Cache Size in Operating System What is Memory Mapping? Difference Between Network Operating System And Distributed Operating System What is the difference between a Hard link and a Soft Link? Principles of Preemptive Scheduling Process Scheduling Algorithms What is NOS? What is the Interrupt I/O Process? What is Time Sharing OS What is process termination? What is Time-Sharing Operating System What is Batch File File system manipulation What is Message-passing Technique in OS Logical Clock in Distributed System

Can a Computer Run Without the Operating System

Computers may function right out of the box, mostly due to operating systems. Nowadays, there are probably already some pre-installed apps in a new computer when you buy one. Have you ever questioned how others without them utilize computers? Without an OS, you can still use a computer, but it's more probable that you won't be able to utilize your favorite apps. You must create a working program in machine code to utilize a PC without an operating system.

An operating system is used nowadays by the typical home PC user to perform tasks. An operating system (often Microsoft's Windows) comes preloaded on almost all marketed PCs. Unless you're a PC maker, obtaining a functional device without Windows is impossible. We'll also discover whether or not a computer can function without it.

Every Game console, smartphone, and computer available today have one thing in common: they all need an operating system (OS) to run programs and carry out everyday functions. Google's Chrome OS has also joined the market for less expensive educational computers. Old Windows and Mac machines can be updated for free with the new ChromeOS Flex to increase lifespan. Linux, an open-source operating system with a broad range of user customization possibilities, is another option on the more specialized spectrum.

Let's first define what the OS accomplishes before moving on to that.

  • The operating system serves as the computer's general contractor. While the plumbing, electrical, and carpentry programs are busy performing their one specific task, the operating system keeps an eye on them, communicates what they require to the processor, and provides a common language they can all use to cooperate.
  • As an illustration, the operating system, not the hard disc, will determine how to manage memory.
  • The operating system must assign how much memory each process needs and ensure no memory conflicts.
  • Also, remember that the operating system on your home computer is a single-user, multitasking one.
  • According to this, you only have one CPU, yet it can run multiple programs at once.
  • When you download files, work on a spreadsheet, and play music on your computer, these things appear to be happening simultaneously.
  • You aren't even aware that the computer is switching between tasks because it is happening so quickly.
  • Even if you think your CPU and operating system have a hand in every element of computing, your programs think they always have complete control over it.

Your operating system is built to allow the CPU to handle just one task simultaneously. The user would not even be aware that the machine is multitasking because it is a computer, not a stressed-out secretary. Since multi-core CPUs have become popular, processors can now simultaneously manage four, six, or more tasks. The OS must still choose which of these tasks receives the highest priority.

Let's look at what a computer might look like without an operating system now that we know how our operating system benefits us.

What is an operating system?

It is, however, designed to talk to both the hardware and the application. Its main function is allocating hardware resources, typically the CPU, an I/O device, and a hard disc. The operating system is a universal translator that communicates with hardware and software. You won't be able to execute any apps without an operating system. The application conveys the resources required for a certain job while a program operates.

Therefore, the more apps your hardware can execute simultaneously, the more powerful it must be. Your gear and software can only operate as designed with it. A computer won't function if you operate without an OS. Computer multitasking is made possible by the operating system's effectiveness in handling tasks. When many applications are active, it prevents conflicts and ensures that tasks will finish when they are supposed to. The programs we run are becoming increasingly complex as hardware capabilities advance.

What about other computing devices?

The majority of operating systems are capable of multitasking or running simultaneous processes. Therefore, an operating system is loaded on gadgets like smartphones, new automobiles, wearables, game consoles, and even your TV.

For the convenience of usage, it may also feature a graphical user interface or GUI. Each operating system has a standout feature that draws a particular demographic of users. While some operating systems are intended for server usage, others are for casual users. The best OS relies on the user's requirements, use, and hardware capabilities.

The OS that is now most widely used

According to StatCounter's data for web client OS as of December 2020, Android is now the most prevalent operating system, with 40.63%.

Windows comes in second, followed by Apple's iOS in third, and macOS in fourth place. Since Android is a modified version of Linux, the idea that Linux is the most important OS is also taken into account.

However, most desktop devices use the Microsoft Windows operating system. According to Statista, the percentage of current desktop users was 76.56% as of December 2020. You are likely reading this post on Windows or Android right now.

Can a computer be used without an operating system?

OS makes PC setup incredibly simple and, at this point, fairly familiar to consumers. Any apps that the majority of PC users are used to using, such as an internet browser or a word processor, require this software to function. To address the query, an operating system is not necessary for a computer to operate.

The hardest part of this situation is creating the instructions and giving them to the computer. The only things that components can comprehend are 0s and 1s.

How does our computer look without an OS:

The first computers didn't have operating systems; instead, they were massive devices capable of running a single program simultaneously. They didn't require operating systems because of this. Can your computer do anything without an operating system, though?

Yes. You have a tonne of work to do, though. You would have to instruct your computer on creating the desired character. The BIOS controls basic functions like clock reset, voltage regulation, and system error diagnosis. Its most significant feature is the option to choose an installed disc from which to boot the appropriate OS.

Without an OS, how can a computer be used?

Operating systems are not present on earlier computer models. Back then, most computers used an instruction set, a set of codes comprising specific instructions for memory, logic, and other activities. When a command from the set is activated by user input, the CPU immediately carries out the command.

Early programs are frequently straightforward, though, because writing these early instruction sets is quite difficult. Even the greatest computers can often only do the most basic tasks. It would help if you created instruction sets to operate a computer without a standard operating system.

What would happen if a computer had no OS?

A computer with no operating system or an instruction set is completely useless. Computer components are nothing more than materials and bits of metal that heat up owing to electricity in the absence of an operating system or instruction set.

Operating systems like Windows and macOS have purchased programs requiring a license. Although Linux is free, using it to the fullest extent may need some technical expertise.

These operating systems greatly assist in enabling users to accomplish more on their computers, regardless of the cost or the developer's brand.

How can a computer be set up without an operating system?

For instance, your hard drive may have just failed, or you may be a PC builder. You must set up an empty computer with a few items before using it normally.

You Require A Functional OS Installer

The user's taste and level of experience will determine this option. Because it is simple to use and appealing, Windows may appeal to casual users. Developers and media producers might choose macOS's powerful performance in the meanwhile. Linux is an alternative for those who like something unique.

These three popular OSes can accommodate the majority of computer requirements. But there are more possibilities than these OSes. In reality, if you put the time and effort into it, you can personalize your operating system to include all the features and functionalities you want.

Put it in storage

USBs or CDs are frequently used to install data on modern computers. You can use any format you choose or that your system supports. Ensure your installation disc can be booted and isn't corrupt.

Your installation disc will be detected by the Power-On Self Test, or POST, which will launch the application on it automatically. At this point, the installation disc is transferred to any accessible storage with all the files required for the system to start up and function (usually the hard drive.)

A pre-Boot Execution Environment, generally known as PXE, can be used for network installation. This option is practical if you install the same OS on many machines.

You Need to Load it into the Memory

The bootstrap loader will begin loading the loaded OS as soon as the machine powers on the hard disc.

This is the first configuration for an OS-less machine to install pre-installed choices from the market. You should create your OS using low-level code if you want to use something other than any already available ones.

Do we have any alternatives for the windows operating system?

Currently, Windows is the most widely used operating system for desktop computers. Almost all of the software you require to use a computer is already installed on it. But if this OS doesn't meet your needs, here are several respectable substitutes you might try.


The main operating system for Apple's Macintosh is called macOS. It is renowned for its simple GUI and slick look. The macOS pairs well with Apple's powerful hardware characteristics and offers exceptional efficiency and power.

Unfortunately, Apple machines are the only ones that can use this OS.


The third most used desktop operating system over the years is Linux. It is renowned for being highly customizable and secure.

The community of this operating system is its finest feature; despite the fact that the OS is free, you may still obtain help from other users. Different "distro" versions of Linux exist, each specializing in a different feature (ease of use, security, etc.)


Despite not being widely used, some people generally choose other operating systems because of their unique qualities. One UNIX-based system utilized by users with heavy workloads and for managing several databases is Solaris.

For users of Chromebooks, there is ChromeOS. Professional networkers that employ sophisticated networking find FreeBSD to be more user-friendly.

How can you install a computer operating system?

Configuring the Boot Order.

Either Boot Options or System Configurations will contain this.

This implies that the machine will start by searching the DVD ROM for the installation material.

Save your adjustments, insert your DVD or USB drive into the appropriate port, and restart.

The operating system installation

Your computer should be reading your installation media after the reboot. The installation GUI, which differs based on the OS installed, should be visible.

As soon as the installation disc has successfully moved data from its drive to the hard drive, follow the installer's instructions and wait.

Your computer should be reading your installation media after the reboot. The installation GUI, which differs based on the OS installed, should be visible.

As soon as the installation disc has successfully moved data from its drive to the hard drive, follow the installer's instructions and wait.


An operating system must be installed to use all of the features of modern computers. OS also makes it simpler for non-technical individuals to operate their software faultlessly whenever they need to. You wouldn't be able to use your computer for everyday tasks right out of the box if it didn't have an operating system.

However, to address the primary query, the response is that an operating system is not required to utilize a computer. Operating systems are far more practical for casual users. An operating system must be installed to use all of the features of modern computers. OS also makes it simpler for non-technical individuals to operate their software faultlessly whenever they need to.

You wouldn't be able to use your computer for everyday tasks right out of the box if it didn't have an operating system. However, to address the primary query, the response is that an operating system is not required to utilize a computer. Operating systems are far more practical for casual users.