devel-su (default password is rootme)
apt-get install nano
nano /etc/fstab
/dev/mmcblk0p1 /home/user/MyDocs ext4 rw,noatime,errors=remount-ro,barrier=1 0 0
#umount /dev/mmcblk0p1
#/sbin/mkfs.ext4 /dev/mmcblk0p1
mount -t ext4 /dev/mmcblk0p1 /home/user/MyDocs