A very common backup format is the native backup program within Microsoft NT, Windows 2000 and XP. It is typically used to write to tape, but the Microsoft Tape Format can also be used to create a single backup file, with the default extension of .BKF.
CnW Recovery software will recover these files, often as a two part procedure. The first stage is to recover the original .BKF file, and then open that file as if it was a disk image. ie use the Disk Image drive selection to select the backup file.
The recovery procedure will scan the backup file and display all files and directories. It should be noted that it is very common for all subdirectory names to be backed up, even when there are no files in the subdirectory.
The routine will work on backup files that are not complete which is a typical issue when the backup has been interupted.