How can I move files to a folder from inside USB Disk?

This is the procedure to move files:

• Press the "Edit" button on top of a list of files.
• Select the files you want to move by touching them.
• Press the cut button (it is the second icon in the toolbar at the bottom of the screen).
• Got to the destination folder.
• Press the paste button (it is the second button in the toolbar at the bottom of the screen).