If that’s the case in your situation, you’re in luck because flash drive recovery on Mac from the Trash folder is a very simple process. Recently deleted files can often be found in the Trash folder. It’s time for us to describe two solutions for data recovery from flash drives. How to Recover Files from a Flash Drive on Mac How to Prevent Data Loss from USB Drive?.Common Reasons Why Files Disappear from Flash Drives.To recover files from a USB flash drive on Mac:.How to Recover Files from USB with Disk Drill on Mac.Solution 2: Use USB Data Recovery Software for Mac.