These settings are intended for full scanning of a disk.
1. The program carries out reading a disk by sectors. Looks for signatures of files at the beginning of each cluster as any file system divides a disk on a cluster and writes down files since a free cluster. This control approaches reading disks with the escaped file system when it is possible to determine the cluster size if it isn't possible to make it, then the size of a cluster is established to equal 512 bytes.
2. The program looks for signatures of files being displaced on one byte, this control allows to find 100% of the famous files, however it demands more time. Is suitable for all types of disks irrespective of a state and type of file system.