What causes the syntax of the file name, directory name or volume label of the U disk file to be incorrect, so that the original folder cannot be copied and the capacity becomes larger?

Method 1: Plug and replace the usb interface again.

Open Control Panel (small icon to view)-Device Manager, find your device in the list of disk drives, and then right-click to uninstall.

Unplug the USB cable and reconnect it. At this point, the driver will automatically load and generally return to normal.

Method 2: Reinstall the USB controller.

Open the control panel (small icon to view)-Device Manager, expand the universal serial bus controller, right-click the device and select "Uninstall", and repeat the above operation for each device. When finished, restart the computer, and the system will automatically install the USB controller.

Method 3: Disable the USB selective pause setting.

1. Control Panel-Power Options. Click Change Plan Settings next to the currently selected power plan.

2. Click to change the advanced power settings.

3. Expand USB Settings -USB Selective Pause Settings, set it to "Disabled" and confirm.