Ever try to open a USB hard drive or external drive and get the error message: "Location is not available" e:\ is not accessible The file or directory is corrupted and unreadable.

You can try to run the Chkdsk command in command prompt (CMD) to fix the disk. Now you should be able to recover your data and open the folder to access the files.

THE COMMAND: "CHKDSK /F /"YOUR DRIVE LETTER" (mine was E:)
You do not need to type anything else or launch any more commands.

Hope this helps!