Hi mailing.. I want to know how use mmc_test.. In my case, i used only eMMC board. So i didn't use unbind/bind for mmc_test. echo mmc0:0001 > /sys/bus/mmc/drivers/mmcblk/unbind then rootfs of my board has be broken Plz let me know.. Regards, Jaehoon Chung -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html