How to delete partition on usb thumb drive

  • From Command prompt type diskpart
  • Within Diskpart, use the List Disk command to check which disk the USB device is. The USB device should be obvious; in my case, it's the 14GB disk.
DISKPART> list disk

Disk ### Status Size Free Dyn Gpt
-------- ------------- ------- ------- --- ---
Disk 0 Online 465 GB 1024 KB
Disk 1 Online 14 GB 0 B
  • Once the disk is known, select the disk and run the rest of the displayed commands (change "disk 1" to the number of your disk):
DISKPART> select disk1

Disk 1 is now the selected disk.
  • Clean the partition
DISKPART> clean

DiskPart succeeded in cleaning the disk.

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