The document provides 3 methods for formatting a USB drive from the command prompt or Windows Explorer:
1) Use attrib commands to remove attributes from files on the drive to view and delete them without formatting.
2) Use the FORMAT command at the DOS prompt to reformat the drive in FAT32 format and apply a label.
3) Right click the drive in Windows Explorer, select Format to reformat the drive, typically using FAT32 but optionally NTFS with limitations.