1. First, select a file or folder in the computer, and right-click to select Copy, as shown in the figure below.

2. Then open the drive where the USB flash drive is located.

3. Then click the right mouse button and select Paste, as shown in the figure below.

4, or WIN+R open running, input cmd, open the command prompt.

5. Switch to the U disk directory, where the U disk drive is E disk, so enter E: that is, switch to the E disk directory.

6. Finally, COPY the file through the copy command. For example, copy the file d:\t\curl\ 1 to a USB flash drive, and then copy d:\t\curl\ 1. Note that this command has a dot (. ) indicates the meaning of the current directory.