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: (1) Runs under UNIX environments; (2) Can undelete files automatically; (3) Supports Long File Names; (4) Supports FAT12, FAT16, and FAT32; (5) Powerful interactive mode; (6) Recursively undeletes deleted directories; (7) Recovers lost cluster chains; (8) Works with single partitions or whole disks.