Difference Between Cold and Warm Booting

Every system needs a bit of rest or some reboot option so that it can start itself with a new mode, a refers itself. The booting process is a common process which most people use to reboot the computer and start it with again.

There are different types of processes of boots. We will see two types of boots that are the cold and warm boots.

Cold vs Warm Booting

The main difference between cold and warm booting is that when the computer or any desktop is turned off and then switching it on is known as cold boots. But if the computer is working and if it is restarted again then it is known as warm boot. This booting process helps in different ways and both of them have different purposes to follow.

Cold vs Warm Booting

While working on a computer sometimes it turns off and you might realize that I have shut down but it is not, the computer is still on with running applications. As well as the RAM is also running.

Cold boot actually reefers to that point where the computer is completely shut down with no power to perform its function and then turns it on.

When we do our work on a desktop sometimes due to high work pressure or maybe due to some system default the computer may turn off or go blank.

This type of situation happens most of the time and people try to press some buttons and run the mouse over and over.

But restarting the computer without turning off the applications is the solution to this problem and is also called warm boot.

Comparison Table Between Cold and Warm Booting

Parameters of ComparisonColdWarm Booting
Other Namescold boot is also a hard bootinga warm boot is also called soft booting
State of ProcessThe computer starts again in a powerless statethe computer starts again without disturbing the applications
Resultresets the hardware and also clears all the RAMresets the power source and all the components
Reason to Followcold boot is done because it fails to follow the warm boota warm boot is usually followed to restart all the applications as it stops working.
StepsUnplugging the computer, switching off the power sourcepressing the control, alt, and delete keys

What is Cold Booting?

The procedure of a software application reloading the version of windows, which finally restarts the computer system, is referred to as booting.

Resetting, rebooting, beginning, and starting it up are all interchangeable phrases that represent the act of turning on a system. Computers may sometimes keep information in RAM after they’ve been turned off.

When the computer’s current is shut off, it must be restarted.

If the machine is working, choose Shut Down to do a cold boot. The cold booting is performed by turning on the computer after it has been turned off.

A cold reboot is required if the machine locks up, as a reset (“warm boot”) may well not be adequate.

A cold boot turns off the computer and clears the memory (RAM) of any proprietary data and registers that the operating system and apps create while they run.

A cold boot sometimes called a “hard boot,” is frequently used to correct erroneous software behavior.

Disconnect the power supply, which involves disconnecting a personal computer or disconnecting the batteries in a laptop, to ensure RAM is completely emptied.

Pushing the power button for ten seconds or longer is often used to cold boot (reset) laptops having non-removable batteries. Including the power switch, another key or button may need to be pushed.

What is Warm Booting?

When a computer is hanging and not working properly, you can restart the computer so that it can function again smoothly.

The warm boot somehow doesn’t switch off and, on the electricity, nor does it wipe data. When paired with a frigid boot, it creates a striking difference.

See start, fresh boot, and restart for more information. Before getting the system of civil to use, it does a self-diagnosis, often called a POST, and loads all the essential drivers.

Even before the operating system kicks in, the system undertakes a series of procedures known as booting. Warm boot, on either hand, means the act of restoring a system’s initial condition while preserving the power supply.

Warm booting is more common than cold booting since customers often keep their computers in a sleep state even when they’re not working. Warm booting skips the power-on self-test but completes all rest of the boot process.

Any software files that have been updated first before the machine was rebooted are also loaded.

It implies you’re starting a reset order by holding the Ctrl, Alt, and Delete keys at the same time, which resets the computer without causing it to lose momentum.

By pressing the “Restart” option on the Menu bar, you can also execute a warm boot. After several seconds, your computer returns to its initial position, completing the process up.

Main Differences Between Cold and Warm Booting

  1. The main difference that you can find between both the booting process is how it is to be initialized. Cold booting is always initialized by pressing the power button in the computer and warm booting is always followed by the operating systems.
  2. Cold booting always resets your computer to the default but warm booting does not reset your application nor the systems to default. Cold booting helps reset the hardware and the memory of the computer.
  3. Another difference is that cold booting has POST which means power-on self-test, it gives the computer to test and amplify the booting. Whereas warm booting does not have POST.
  4. The frequency of usage is more for warm booting than cold booting. Everyone prefers warm booting as people will need to restart the applications again in cold booting. It is more helpful and does not consume time like cold booting.
  5. The other main difference that you will find is that the troubleshoot problems for the computer can always be saved by warm booting. Warm booting restarts the computer while keeping the application on. It refreshes the system and solves the default. While cold booting takes time and the issues are rarely solved.


The boot method you select is determined by the difficulty or error that the system is experiencing, which could be anything from a frozen program to an inaccessible application to a required system reboot following a software update.

If a program meets fails to react, a warm boot is a better option because a quick restore statement would restore the system to its original state without disconnecting power.

A cold boot, on either hand, is especially effective in preventing system breaks that would need you to force reboot the system to complete a full system diagnosis.

One disadvantage of performing a cold boot is that it resets computer hardware, leading to complete memory problems.


  1. https://www.inderscienceonline.com/doi/abs/10.1504/IJMOR.2013.050605
  2. https://www.publish.csiro.au/CP/AR9890001

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