Running on an external drive is a common way to fix file system errors or "unreadable" drive messages. Whether you prefer a simple point-and-click interface or the power of the command line, here is how you can do it. Option 1: The Quick Way (File Explorer)
After a repair, especially with /f , chkdsk often creates large folders named FOUND.000 , FOUND.001 , etc., containing FILE0000.chk files. These are recovered file fragments. They are not automatically renamed to their original extensions. Recovering meaningful data from .chk files requires third-party tools or manual hex inspection. chkdsk external drive