attrib command for hidden folders on the usb
some files are showning but not all of them.
You can tell Windows to show hidden files.
Open Explorer and if needed hit ALT to bring up the file/edit/view/tools/ect menus
select Tools and then Folder Options...
In the new Window select the View tab and look for Hidden files and folders select Show hidden files, folders and drives(this should remove the selection for Don't Show hidden files, folders).
See if you can see the folders now. If you can you can remove the Hidden attribute in each folders properties.
For the command prompt, I think attrib -h foldername still works.