Some basic info: / except for /home and /opt is considered rootfs; the 4.2GB partition /home/ and /opt/ except for /home/user/MyDocs/ is called userfs; the 2.1GB partition /home/user/MyDocs is your emmc; the 57GB partition Now if you have things like pictures and video files in /home/ or /home/user/ excluding /home/user/MyDocs then its counted into the userfs space. So move them to ~/MyDocs unless they are system/app files.