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How to Create Bootable USB Without Any Software Using CMD

Aug 15, 2017 / Posted by Jean to Todo Backup Resource

Summary:
Do you prefer a customized way to create bootable USB without any software using cmd in Windows PC? To make your own bootable USB keys, flash drives or memory sticks, follow the tips here to avoid errors.

In a previous post, we found you EaseUS Windows backup software - the best USB bootable software download for all Windows, which saves ordinary computer users out of trouble of making their own customized bootable USB flash drive. And in today's post, we're going to introduce you the other widely applied yet totally free way to make your USB flash drive bootable without the help of third-party USB creation tools. So, will you prefer to create bootable USB without any software, instead, using cmd?

How to create bootable USB without any software?

Since a bootable USB drive contains all essential system booting information and files, it can help boot and start a computer's operating system even when it's dead due to corrupted system files, fatal hardware issues and so on. We know that there are dozens of professional tools available on the internet that assist users to make a bootable device in much an easier way, however, it's still significantly useful to grasp the knowledge of using Dikspart command to achieve the same goal.

Guide: use cmd to format and create a bootable USB drive

Note that the process of making your flash drive bootable will erase all data on the target drive completely. Remember to backup important files and data in advance.

Step 1. In Windows 10, 8 or 7, press Windows + R keys simultaneously to open Run Dialog box, type cmd and press Enter. Or, just navigate to Start, All Programs, Accessories, right click on the Command Prompt and select Run as Administrator.

Step 2. In Command Prompt, type Diskpart and press Enter.

Step 3. Type list disk. You'll see all the connected drives including the prepared USB flash drive, with additional information behind, such as disk number, size, etc.

Step 4. Now you should type select disk #. The # represents the number of your own USB flash drive. For example, mine is disk 1, so I type select disk 1.

Step 5. Type the following commands one by one, pressing Enter after each command.

clean

create partition primary

select partition 1

active

format fs=ntfs
(it means you format the drive with NTFS file system)

assign

exit

After these steps, it's time to copy the entire content of OS from an ISO image to the USB manually. To do this, go to My Computer windows, right-click on the DVD drive where you put ISO image, select Open to view the contents. Copy all the files and folders on the DVD to the USB flash drive. Congratulations, you've succeeded in creating bootable USB without any software!