Re: [Trisquel-users] How to recover deleted files on a USB drive?

[happy_gnu]

Read this  
https://www.howtogeek.com/howto/15761/recover-data-like-a-forensics-expert-using-an-ubuntu-live-cd/

It is meant for hard drives but should work for USBs.

Be careful though. Make sure you are doing this to your USB and not your hard  
drive. There are many more great options to recover files, if that article is  
not good enough for you :)