Create Uefi usb bootable in window 10

 note: your usb device must be 16gb

 Open run box 

Type (diskpart) and press enter 

* DISKPART> list disk

  Disk ###  Status         Size     Free     Dyn  Gpt

  --------  -------------  -------  -------  ---  ---

  Disk 0    Online          931 GB  1024 KB        *

  Disk 1    Online           14 GB    14 GB        *

 

* DISKPART> select disk 1

Disk 1 is now the selected disk.

* DISKPART> clean

DiskPart succeeded in cleaning the disk.

* DISKPART> convert mbr

DiskPart successfully converted the selected disk to MBR format.

* DISKPART> convert gpt

DiskPart successfully converted the selected disk to GPT format.

* DISKPART> create partition primary

DiskPart succeeded in creating the specified partition.

* DISKPART> select partition 1

Partition 1 is now the selected partition.

* DISKPART> assign

DiskPart successfully assigned the drive letter or mount point.

* DISKPART> format fs=fat32 quick

  100 percent completed

DiskPart successfully formatted the volume.

DISKPART>