~/Documents$ cryptsetup isluks /dev/sdc9
Usage: cryptsetup [-?vyrq] [-?|--help] [--usage] [--version] [-v|--verbose] [--debug] [-c|--cipher=STRING] [-h|--hash=STRING]
        [-y|--verify-passphrase] [-d|--key-file=STRING] [--master-key-file=STRING] [--dump-master-key] [-s|--key-size=BITS]
        [-l|--keyfile-size=bytes] [--keyfile-offset=bytes] [--new-keyfile-size=bytes] [--new-keyfile-offset=bytes] [-S|--key-slot=INT]
        [-b|--size=SECTORS] [-o|--offset=SECTORS] [-p|--skip=SECTORS] [-r|--readonly] [-i|--iter-time=msecs] [-q|--batch-mode]
        [-t|--timeout=secs] [-T|--tries=INT] [--align-payload=SECTORS] [--header-backup-file=STRING] [--use-random] [--use-urandom]
        [--shared] [--uuid=STRING] [--allow-discards] [--header=STRING] [--test-passphrase] [--tcrypt-hidden] [--tcrypt-system]
        [-M|--type=STRING] [--force-password] [OPTION...] <action> <action-specific>
cryptsetup: Unknown action.