Nowadays, the computer is a very useful and important device in our modern life. There are two main components of a computer: hardware and operating system software (Windows, Linux, macOS, etc.).

We need to install the operating system if a major error is found while operating our computer. A bootable pendrive is essential for installing an operating system on our PC or laptop. Now, I will describe the process of making a bootable pendrive without any software. I will only use Windows’ default command prompt (cmd).

Creating a bootable pendrive without any software involves using built-in tools in Windows or Linux. Here’s a general guide for both operating systems:

Making a Bootable Pendrive with Windows:

1. Connect the USB Drive: Insert your USB drive into the computer.
2. Open Command Prompt: Press Win + R, type cmd, and press Enter.
3. Launch Diskpart: Type diskpart and press Enter.
4. List Drives: Type list disk to see all drives. Identify your USB drive.
5. Select USB Drive: Type select disk X (replace X with your USB drive number).
6. Clean the Drive: Type clean to erase the drive.
7. Create a Partition: Type create partition primary.
8. Format the Drive: Type format fs=ntfs quick or format fs=fat32 quick for FAT32.
9. Make the Drive Bootable: Type active.
10. Copy Files: Manually copy the files from the ISO to the USB drive.

Follow the steps below for Windows:

Step 1: Attach a pen drive or flash drive to the USB port of the computer.

Step 2: Go to the Start Menu → Accessories → Right-click on Command Prompt → Run as Administrator → Yes
or type “cmd” in the search box, then right-click on Command Prompt and select “Run as Administrator.”

Step 3: Enter the following commands in the Command Prompt as shown below:

• diskpart -> Enter
• list disk -> Enter
• select disk 1 (Select the pendrive disk) -> Enter
• clean -> Enter
• create partition primary -> Enter
• format fs=fat32 quick -> Enter
• active -> Enter
• exit -> Enter

Step 4: Then, copy the ISO file data from the DVD of Windows 7, 10, 11, or another operating system onto the pendrive.

Making a Bootable Pendrive with Linux:

1. Connect the USB Drive: Insert your USB drive.
2. Open Terminal: Open the terminal.
3. Identify USB Drive: Use lsblk to find your USB drive.
4. Unmount the Drive: Use umount /dev/sdX (replace X with your USB letter).
5. Write ISO to USB: Use the command sudo dd if=/path/to/your.iso of=/dev/sdX bs=4M (replace /path/to/your.iso with your ISO file path and sdX with your USB drive).
6. Sync: Type sync to ensure all data is written.

This will make your USB drive bootable without any additional software. For more detailed instructions, consider visiting official documentation or tutorials for your specific OS.

Finally, enjoy your bootable pendrive and use it to install the operating system on your computer.

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