6 juil. 2023 · Key Takeaways. To format your USB flash drive to FAT32 format, open File Explorer or Disk Management, right-click your drive, choose "Format," select "FAT32" from "File System," and choose "Start" or "OK." To do that from Command Prompt or PowerShell, run the "format /FS:FAT32 X:" command replacing "X" with your drive letter.