How to copy Wii Flow USB Disk

I have Wii Flow installed in my Wii and also I have USB harddisk with Wii games which can be pay through Wii Flow. Can anyone let me know how can I create a copy of USB harddisk to another USB harddisk. Thank you in advance.

Use a partition cloner. PartitionMagic maybe?

I used Norton Ghost and created an image , but when I connected to Wii it is not playable and error -1 WBFS file is appearing.

If you use the WBFS format on the USB disk, there is no (easy) way you can clone it.

You will be required to transfer all the games to a normal NTFS disk first. After that you an transfer them to another WBFS disk. Both can be done using the WBFS manager for Windows.