The tape is positioned on the first block of the file. You can abbreviate commands as long as they remain unique. Thus, the command mt rewi is valid, but mt rew is ambiguous and not valid. An error occurred or mt was unable to open the specified tape drive. 2 Command was unrecognized.
Some options are hardware dependent.
MKS does not supply the ASPI driver, since the implementation of an ASPI driver is hardware dependent. As such, it cannot set the tape density. See tape for a description of the valid SCSI tape device names.