Taken from a posting by Wolfgang S. Rupprecht to netbsd-users on April 26th.
Fatback is a forensic tool for undeleting files from FAT file systems.
Fatback is different from other undelete tools in that it does the
following:
* Runs under UNIX environments
* Can undelete files automatically
* Supports Long File Names
* Supports FAT12, FAT16, and FAT32
* Powerful interactive mode
* Recursively undeletes deleted directories
* Recovers lost cluster chains
* Works with single partitions or whole disks
