DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (
c1 int(10) unsigned NOT NULL AUTO_INCREMENT,
c2 varchar(30) NOT NULL,
c3 smallint(5) unsigned DEFAULT NULL,
PRIMARY KEY (c1)
) ENGINE = MYISAM 
PARTITION BY HASH(c1)(
PARTITION p0
DATA DIRECTORY = 'C:/mysqltest/p0Data'
    INDEX DIRECTORY = 'D:/mysqltest/p0Index',
PARTITION p1,
PARTITION p2
DATA DIRECTORY = 'E:/mysqltest/p2Data'
    INDEX DIRECTORY = 'F:/mysqltest/p2Index'
);
Warnings:
Warning	1618	<DATA DIRECTORY> option ignored
Warning	1618	<INDEX DIRECTORY> option ignored
Warning	1618	<DATA DIRECTORY> option ignored
Warning	1618	<INDEX DIRECTORY> option ignored
INSERT INTO t1 VALUES (NULL, "first", 1);
INSERT INTO t1 VALUES (NULL, "second", 2);
INSERT INTO t1 VALUES (NULL, "third", 3);
ALTER TABLE t1 ADD PARTITION (PARTITION p3 DATA DIRECTORY = 'G:/mysqltest/p3Data' INDEX DIRECTORY = 'H:/mysqltest/p3Index');
Warnings:
Warning	1618	<DATA DIRECTORY> option ignored
Warning	1618	<INDEX DIRECTORY> option ignored
INSERT INTO t1 VALUES (NULL, "last", 4);
DROP TABLE t1;