diff --git a/common/cmd_mgdisk.c b/common/cmd_mgdisk.c
new file mode 100644
index 0000000..48323d4
--- /dev/null
+++ b/common/cmd_mgdisk.c
@@ -0,0 +1,76 @@
+/*
+ * (C) Copyright 2009 mGine co.
+ * unsik Kim <donari75@gmail.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+
+#if defined (CONFIG_CMD_MG_DISK)
+
+#include <mg_disk.h>
+
+int do_mg_disk_cmd (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	u32 from, to, size;
+
+	switch (argc) {
+	case 2:
+		if (!strcmp(argv[1], "init"))
+			mg_disk_init();
+		else
+			return 1;
+		break;
+	case 5:
+		from = simple_strtoul(argv[2], NULL, 0);
+		to = simple_strtoul(argv[3], NULL, 0);
+		size = simple_strtoul(argv[4], NULL, 0);
+
+		if (!strcmp(argv[1], "read"))
+			mg_disk_read(from, (u8 *)to, size);
+		else if (!strcmp(argv[1], "write"))
+			mg_disk_write(to, (u8 *)from, size);
+		else if (!strcmp(argv[1], "readsec"))
+			mg_disk_read_sects((void *)to, from, size);
+		else if (!strcmp(argv[1], "writesec"))
+			mg_disk_write_sects((void *)from, to, size);
+		else
+			return 1;
+		break;
+	default:
+		printf("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+	return 0;
+}
+
+U_BOOT_CMD(
+	mgd,	5,	0,	do_mg_disk_cmd,
+	"mgd     - mgine m[g]flash command\n",
+	": mgine mflash IO mode (disk) command\n"
+	"    - initialize : mgd init\n"
+	"    - random read : mgd read [from] [to] [size]\n"
+	"    - random write : mgd write [from] [to] [size]\n"
+	"    - sector read : mgd readsec [sector] [to] [counts]\n"
+	"    - sector write : mgd writesec [from] [sector] [counts]\n"
+);
+
+#endif