How to make a bootable pendrive unbootable?

A boot device is a storage device which contains all the required system files to run a computer. Basically computer start running only after loading some files from device which is boot enabled. If we made a pendrive bootable then we can’t use it to carry other media and file until we unboot it and convert it back to normal state or unbootable. When we make a USB bootable then it became of NTFS fromat, so we need to get it back to FAT format to use it again as a removal USB.

In the previous article we have discussed how to make a USB drive bootable. Now a question may arise that how do we make the USB unbootable or the normal one, once we have done our boot job through the pendrive and we ahve no more use of a bootable drive. Here we will see how to unboot that bootable USB and convert it to normal one. Basically nothing much we have to do for it, We just have to format that USB and we will have to change it to FAT32 format type if it is in NTFS format type.

We can do it both by manual process and by the help of Command Prompt.

Manual Process to make a pendrive unbootable

  • Insert your bootable USB pendrive which you want to make unbootable to the USB port of your computer.
  • Go to My Computer and find your USB drive there. Right click on that drive and Click on Format.
  • Now in the File System drop menu select FAT32(Default).
  • Then tick on Quick Format and click on Strat button.
  • You will get a Warning Message. Just click on Ok.
  • It will start formatting your USB to FAT32 format and on completion you will get a message as Format Complete.

You are done making your pendrive unbootable. Now you can use it as a normal pendrive to save your data there.

If you are not satisfied with this manual process then you can use Command Prompt to do the same job.

By Command Prompt

  • To open command prompt, press Windows+R at a time. A box with name RUN will appear. Type CMD there and press Enter key. CMD will be  opened.
  • On command Prompt type DISKPART  and then press enter key. Diskpart command will start.
  • Type LIST DISK and press enter key. A list of disk with their number, sizes and free spaces will appear.  Find out proper disk which you want to make unbootable. Find the Disk number(Left most column of the list) of your bootable usb drive.
  • Type SELECT DISK <N> and press enter. (where N is your disk number it may be 0,1,2….). For example: if your disk number is ‘1’ then type SELECT DISK 1
  • Type CLEAN and press enter.
  • Type CREATE PARTITION PRIMARY and press enter.
  • Type ACTIVE and press enter.
  • Type FORMAT FS=FAT32 QUICK and press enter. Wait for few second until the format process reach 100 percent.
  • Type ASSIGN and press enter.
  • Then type EXIT and press enter . Again type EXIT and press enter.
Unbootable pendrive

See this for further reference.

Now all is done. Now you can use your USB to carry other files or media.


Hope you liked this description. Comment below to let us know your doubts.

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