16g u disk becomes 1g U-disk solution, you need to format it before using the disc in the drive

1\ Computer----Management------Disk Management There is a black area that is unassigned

2\

1) Enter CMD command line window
2) Enter DiskPart, and return. Popup system prompt, select Yes.
3) Type list disk and enter. Read the information tip. Should be disk 2 is your USB stick.
4) Input Selcet Disk 1, and enter.
5) Type clean and enter.
6) Enter Exit to exit the tool.
Then go back to disk Management and find that the USB stick becomes an unallocated space.
At this point, and then "new Simple Volume", all the default operation can go on. In addition, recommended to the entire volume of USB stick

The solution that needs to be formatted before using the disc in the drive is also above, but keep good data ahead of time.

16g u disk becomes 1g U-disk solution, you need to format it before using the disc in the drive