Usage: REPLACE DRIVE= Replaces the specified drive with the currently selected drive. DRIVE= Specifies the index of the drive ...

Usage:  REPLACE DRIVE=      Replaces the specified drive with the currently selected drive.      DRIVE=   Specifies the index of the drive to be replaced. This drive                 must be different from the currently selected drive.      A drive must be selected for this operation to succeed.  Example:      REPLACE DRIVE=0