How to create Windows 10 Flash drive Installer

To create Windows 10 installer in USB Flash drive  without additional tool/software:

1. Insert Windows 10 Disc installer to DVD drive, or if you use ISO image, please mount to be a  drive.
2. Insert/connect  8GB USB Flash drive  to the USB port.
3. Open the File Explorer to know the drive letters for DVD containing Windows installer and for the flash drive.
For example in My laptop, the drive letter for DVD installer is F, and for the USB Flash drive is H.

4. Run the Command line/ Command prompt as administrator.

5. In the command prompt type diskpart hit Enter.

>diskpart

6. Write:  list disk then hit Enter.

DISKPART>list disk

In the example/capture above, my flash drive is Disk 1. (with 8GB /7710MB).

7. Type:  select disk 1 then hit Enter.

DISKPART>select disk 1

There will be a note:  disk 1 is now selected disk.

8. Type:  Clean then hit enter.

DISKPART>clean

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