How to Format USB Flash Drive from Command Prompt
Step 1: Type cmd in the search box, then you can get the best match called Command Prompt. Right-click on it and choose “Run as administrator”.
Step 2: On the Command Prompt window, type diskpart and press “Enter”
Step 3: Type list disk and press “Enter”. According to the list disk information, check which disk is your USB flash drive.
Step 4: Now type select disk and press “Enter”.
Step 5: Type clean. Wait some time for disk erasing.
Step 6: Type create partition primary and press “Enter”.
Step 7: After diskpart successfully created the specified partition, type format fs=ntfs and press “Enter”. If you prefer other file system formats, change the command ntfs to the desired one such as fat32, exfat, etc.
Step 8: Type assign to create a drive letter to the flash drive.
