Mac files contain two parts called forks - a data fork and a resource fork. That means two files are linked to one name in the Mac file system. The resource fork can hold resources such as icons, fonts, menus and sounds, warning boxes and GUI (Graphical User Interface). The resource fork has a specific structure allowing programs to find and access a particular resource quickly. The data fork holds data such as text and images. Transferring a Mac file to a PC network can break the resource fork. Lost Mac data typically is the result of a corrupted data fork or file resource fork. RestoreMyData recodes these "broken" resource forks using MacBinary technology. Our Mac Data Recovery is based on our expertise to rebuild the lost or broken resource forks via this MacBinary technology.

The Mac OS has gone through many changes over time. The Mac OS 9x generations and some prior Mac generations relied on a unique data structure called a file resource fork or data fork. Mac OSX and higher does not necessary need to rely on the file resource fork or data fork. Very few OSX applications today depend on using the resource fork.