To format a USB drive using the command prompt in Windows, follow these steps:

steps To format a USB drive using the command prompt

There are several reasons why you might need to format a USB drive:

To erase all data from the drive: Formatting a USB drive will erase all data from the drive, so it can be useful if you want to sell or donate the drive, or if you want to reuse the drive and start with a clean slate.
To change the file system: If you want to use the USB drive on a device that only supports a specific file system (such as NTFS or exFAT), you will need to format the drive with that file system.
To fix errors or corruption: If the USB drive is not working properly or is experiencing errors, formatting the drive may fix the issues.
To install a new operating system: If you want to install a new operating system on a computer using a USB drive, you will need to format the drive and create a bootable USB installation media.

There are other reasons why you might need to format a USB drive, but these are some of the most common ones.

Insert the USB drive into your computer.
Open the command prompt by typing "cmd" into the Start menu search bar and pressing Enter.
Type "diskpart" and press Enter. This will open the DiskPart utility.
Type "list disk" and press Enter. This will show a list of available disks.
Type "select disk X" where X is the number of the USB drive you want to format. For example, if the USB drive you want to format is the second disk in the list, you would type "select disk 2".
Type "clean" and press Enter. This will erase all data from the USB drive.
Type "create partition primary" and press Enter. This will create a new partition on the USB drive.
Type "select partition 1" and press Enter. This will select the partition you just created.
Type "format fs=ntfs quick" and press Enter. This will format the partition using the NTFS file system. The "quick" parameter tells the system to perform a quick format, which means that it will not check the drive for bad sectors.
Type "assign" and press Enter. This will assign a drive letter to the USB drive.
Type "exit" and press Enter to exit the DiskPart utility.

Your USB drive should now be formatted and ready to use.