--nt_signature={auto|new|backup|existing}
The NT signature is a record that is kept in the hard disk's MBR. It uniquely identifies the hard disk for the operating system.
When recovering a disk containing a system volume, you can choose what to do with the NT signature of the target disk. Specify any of the following parameters:
The software will keep the NT signature of the target disk if it is the same NT signature as the one stored in the backup. (In other words, if you recover the disk to the same disk that was backed up.) Otherwise, the software will generate a new NT signature for the target disk.
The software will generate a new NT signature for the target disk.
The software will replace the NT signature of the target disk with the one from the backup.
The software will leave the NT signature of the target disk untouched.