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 Operating System:

An operating system (OS) is a collection of software that manages computer hardware resources and provides common services for compute programs. The operating system is an essential component of the system software in a computer system. Application programs usually require an operating system to function.

Difference between 32 bit and 64 bit version of Operating System:

The terms 32-bit and 64-bit refer to the way a computer’s processor (also called a CPU), handles information. The 64-bit version of Windows handles large amounts of random access memory (RAM) more effectively than a 32-bit system. 32 bit system has a limit of 4 GB RAM to process data where as the 64 bit operating system has 2^64 bits of space to address and supports 16 hexa bytes of RAM to process data.

What is File System?

Ans: A file system is the methods and data structures that an operating system uses to keep track of files on a disk or partition; that is, the way the files are organized on the disk. The word is also used to refer to a partition or disk that is used to store the files or the type of the file system.



NTFS (NT file system; sometimes New Technology File System) is the file system that the Windows NT operating system uses for storing and retrieving files on a hard disk. NTFS is the Windows NT equivalent of the Windows 95 file allocation table (FAT) and the OS/2 High Performance File System (HPFS).


A FAT file system is a specific type of computer file system architecture and a family of industry-standard file systems utilizing it. The FAT file system is a legacy file system which is simple and robust.

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Minimum System Requirements For Windows 7:

1: Processor: 1 gigahertz (GHz) or faster 32-bit (x86) or 64-bit (x64).

2: RAM: 1 gigabyte (GB) RAM (32-bit) or 2 GB RAM (64-bit).

3: Hard Disk: 16 GB available hard disk space (32-bit) or 20 GB (64-bit).

4: Graphics: DirectX 9 graphics device with WDDM 1.0 or higher driver.

5: A Disk Drive DVD or CD is must.

How to Install Windows 7 operating system step by step procedure.

Enter Your Computer’s BIOS.Turn off the computer that you want to install Windows on then turn it back on. When the BIOS screen appears or you are prompted to do so, press Del, Esc, F 2, F 10, or F 9 (depending on your computer’s motherboard) to enter the system BIOS. The key to enter the BIOS is usually shown on the screen.



Select the CD ROM device.

After that you will see the text, Press any key to boot from CD or DVD. It will go on for four dots before that press any key.


After Pressing any key.


When you press any key the windows will start loading its files, do not quite until files are loaded.

Once you have completed this stage, Windows 7 will start loading. If you see the below image, you’re doing well so far.


After a few moments, you will reach the installation menu. Your first step is to choose the language and the keyboard.


You will be now taken to the Install now menu. We have already prepared for the installation, so you can click Install now and proceed.


The next step is to accept the license agreement.


After this, you will have to decide whether you want to Upgrade an existing installation or perform a Custom (advanced) installation, which is basically creating a new copy of Windows.10

The next step is to choose where you want to install Windows 7. This is probably the most important part of the entire installation, so you need to be very careful here and make the right choices.


Inexperienced users can simply highlight the unallocated space and click Next. The partitioning layout will be created for them. However, we want to explore additional features. To this end, we need to expand the Drive options (advanced).


We will create a new partition. According to official system requirements, Windows 7 needs 16 GB of free space. However, you can do with less. The minimum recommended space for a partition where you want to place Windows 7 is 10350 MB. Eventually, the installation itself will take approx. 7 GB . Just for your information, here’s a snippet of what would happen if you try to install Windows 7 on a partition that does not meet the minimum expected size limit.


This does not mean your installation won’t succeed. It might, but why risk it? We will create a 14 GB partition:


Windows 7 installer will now tell you that it will have to create an additional partition for the core system files. This will be a small primary partition ahead of your newly created one.


This is what it looks like:


If you’re using ONLY Windows 7 to create a partition layout on your system, then you should just create a partition with a sufficient size to hold the Windows 7 data files and nothing else. The system partition will be added. Leave the handling of any unpartitioned, free space after the installation.17

If you’re comfortable with your setup, highlight the created partition and click Next. Windows 7 will be installed to this partition. Depending on your hardware, this can take some time. My testing shows approx. 30-40 minutes.


After completing the first step, it will expand (decompress) the files that it had copied.



After that it will automatically restart after 15 seconds and continue the setup. You can also click Restart now to restart without any delays.


Eventually, you will be asked to provide your username and a computer name. You will also have to password-protect your account. This is most advisable. You should opt for a strong password.



I will choose Ask me later, but you may want to go for either the first or the second option, as you see fit.


Congratulations, you have just successfully installed Windows 7.




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