mounting sd card via command prompt (via adb)
1) go to your's phone's file manager
2) create a folder named external_sd in /sdcard/ (you have to make this folder to mount sd card in /sdcard/ !!!
3) inject this command in cmd (adb)
su mount -o bind /mnt/emmc /sdcard/external_sd
mounting sd card via terminal (terminal file added for newbies )
first do step 1 and 2 above .
then inject this code in terminal
busybox mount --bind /mnt/emmc /mnt/sdcard/external_sd
done ......... enjoy