PhotoRec is a file data recovery software designed to recover lost pictures from digital camera memory or even Hard Disks. It has been extended to search also for non audio/video headers.
I compiled it for OS/2.
http://www.fbakan.de/photorec-os2.htm
http://www.fbakan.de/testdisk/photorec-6_4-os2.zip
Source: OS2VOICE