How can I see hidden files in pendrive?

How to fix pen drive not showing data and retrieve files.

Connect the USB pen drive or flash drive to PC. 

Open Windows "File Explorer" 

> Go to "Tools" 

> "Folder" Options 

> Go to the "View" Tab

> Check "Show Hidden Files". 

This will make sure that the files and folders are not in hidden mode. 

Click on the "Start" Menu > "Run" 

Type cmd and press "Enter". 

To make the pen drive data show up, 

type the commands: attrib -h -r -s /s /d I:\*.*  and press "Enter". 

Replace "I" with the drive letter of your pen drive.