This freeware will help you retrieve lost data from a USB drive
bitwar data recovery can recover data from hard disk, u disk, sd card,etc.
Use this tool to restore lost drive partitions
Free undelete software to recover your all deleted files.
Retain possession of lost files without fail - a computer file recovery program
Recover damaged or deleted files from any USB drive
A free data recovery software that can be installed to and booted from a USB flash drive