Command line parameters include: /answer[:filename /unattend[:filename /adv /CreateDCAccount /UseExistingAccount:Attach /answer ...

Command line parameters include:     /answer[:filename]     /unattend[:filename]     /adv     /CreateDCAccount     /UseExistingAccount:Attach  /answer is used to supply an answer file. /unattend is used to specify the unattended operation mode /adv enables advanced user options. /? will display this help /CreateDCAccount creates an RODC account /UseExistingAccount:Attach attaches the server to a DC account  /CreateDCAccount and /UseExistingAccount:Attach are mutually exclusive. Unattended operation parameters can also be specified on the command-line.  For example:     dcpromo.exe /ReplicaOrNewDomain:Replica