Sometime we may not be able to view the contents of an USB drive. Please follow below step to get it resolved
Open a command prompt and type the below command. This command will make all the folders and files are visible to the users.
COMMAND: attrib -h -r -s /s /d e:\*.*
h – hidden files
s – system files
r – read only files
/s – Processes all files in that path
/d – Processes all folders in that path
– symbol is used to clear the attribute. For example If we give attrib -h index.txt, then index.txt will be visible to all users
Please note that e refers your USB drive directory.