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How to make Bootable Pen drive/USB Without any Software for Windows 7 and 8

How to make Bootable Pen drive/USB Without any Software for Windows 7 and 8: Do you know that you can boot a new operating system in your laptop or format your PC through a USB Pen drive. Yes, you heard it right!! through a USB Pen drive. Many people do not know about it. Also, booting through a USB pen drive has many advantages. It is helpful for those who does not have optical drive or if their DVD drive is not working. It becomes difficult for them to format their system in case their Windows is affected by virus. Instead of buying a new external optical drive, they can opt for this process. There are many softwares available on internet to make a bootable pen drive/USB. But it is a long and confusing procedure. So, I will tell you the procedure to make a bootable Pen drive/USB without any software for Windows 7 or 8. You just need to do a simple coding and you are done. But please make sure that you have all the necessary requirements needed for this process.

Requirements to make Bootable Pen drive/USB without any Software for Windows 7 or 8:

  • Blank USB (pen drive) of minimum storage capacity of 4 GB.
  • A fresh copy of Windows 7 or 8 files.
  • A system of Windows XP or greater operating System.

Advantages to boot from Bootable Pen drive/USB:

  • The process of installing a Window from a USB pen drive is much faster and better than that from Optical DVD drive.
  • It is easy to carry.
  • There is no vulnerability of scratches and corrupt files.
  • It is the best option for those who do not have optical drive.

Step-by-step Guide to make a bootable USB Pen drive without any software for Windows 7 or 8:

  • Insert your 4 Gb pen drive or greater pen drive into your laptop or PC.
  • Go to start. In search programs and files, type cmd, right click on it and then click on “run as administrator”.

snapshot of How to open cmd (command prompt) as administrator

  • A new window called command prompt will appear in your screen. Turn on your CAPS LOCK.

command prompt window with all commands

  • Type DISKPART and press enter.
  • Type LIST DISK and press enter. This will show all the drives available in your system. Find the Disk number of your pen drive. In my case, it is Disk 1. There can be different disk no. of your USB pen drive depending on your no. of drives.
  • Type SELECT DISK 1 and press enter.
  • Type CLEAN and then press enter.
  • Type CREATE PARTITION PRIMARY and press enter.
  • Type SELECT PARTITION 1 and press enter.
  • Type ACTIVE and then press enter.
  • Type FORMAT FS=NTFS and press enter. Wait till the processing becomes 100% complete. Do not do anything until it becomes 100% or else it may create problems or errors.
  • Type ASSIGN and then press enter.
  • Type EXIT and press enter.
  • Your USB pen drive has successfully become bootable and is now ready to use. You just need to copy and paste all the files of Windows 7 or 8 files in the pen drive.

Your USB icon will look like this after becoming bootable

  • After copying the files, you can boot a new windows in your laptop or format your PC through this easily.

NOTE (Precautions):

  1. Before making bootable USB pen drive, do make sure that you are using only one pen drive at this time.
  2. Please make sure that your CAPS LOCK is on before typing anything in the command prompt otherwise it will not detect the commands properly.
  3. Before installing the windows, set your system as BOOT FROM USB in your BIOS settings otherwise you will not able to boot from Pen drive. To go to BIOS settings, restart your system and press a function key from f1….f12 depending on the configuration of your system. Usually, it is f8, f9 or f10.
  4. This procedure is only for Windows 7 and 8 and is not compatible for Windows XP.

If you have any query related to this article, feel free to contact me. 🙂

Ayan Das is one of the owner and creative head of . He is a part time writer, keen blogger and an occasional website designer. He is pursuing engineering in electronics and communication from GGSIPU University. He is a tech lover and always fond of learning new things.


  1. When i do window sees no drive no partition and when i cancel the installation and restart my laptop with my old windows it show boot manager missing please help me please hurry……… Please please i beg u

    • Sorry for the late reply, Sumit. I think you have used wrong commands which has deleted some of your important system folders. Now, you have to install a fresh copy of windows.


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