16GB shows as full even though only 3.5GB in use

Quote:

df -h

shows
Code:Filesystem Size Used Avail Use% Mounted on
/dev/root 15G 14G 12M 100% /
devtmpfs 969M 8.0K 969M 1% /dev
tmpfs 978M 116K 978M 1% /dev/shm
tmpfs 978M 9.0M 969M 1% /run
tmpfs 5.0M 4.0K 5.0M 1% /run/lock
tmpfs 978M 0 978M 0% /sys/fs/cgroup
/dev/mmcblk2p8 4.9M 347K 4.3M 8% /boot
tmpfs 196M 8.0K 196M 1% /run/user/1000
tmpfs 196M 0 196M 0% /run/user/0while Quote:

du -kx / | sort -rn | less

(first lines) shows:
Code:3458796 /
2498820 /usr
1174128 /usr/lib
1054352 /usr/share
806276 /usr/lib/aarch64-linux-gnu
559456 /var
247288 /var/cache
238792 /var/cache/apt
225056 /usr/share/locale
198740 /home
198736 /home/linaro
190568 /usr/share/doc
187660 /usr/lib/aarch64-linux-gnu/dri
183944 /usr/bin
179352 /var/lib
177304 /var/cache/apt/archives
148316 /home/linaro/.cache
147356 /home/linaro/.cache/chromium
147352 /home/linaro/.cache/chromium/Default
146584 /home/linaro/.cache/chromium/Default/Code Cache
146564 /home/linaro/.cache/chromium/Default/Code Cache/js
122204 /var/lib/apt
122132 /var/lib/apt/lists
112628 /usr/share/fonts
107140 /var/log
102284 /lib
84692 /usr/share/fonts/truetype
77888 /usr/share/icons
74312 /usr/share/emacs
74264 /usr/share/emacs/26.1
73184 /usr/lib/python2.7
72984 /usr/lib/gcc
72980 /usr/lib/gcc/aarch64-linux-gnu
72976 /usr/lib/gcc/aarch64-linux-gnu/8
65860 /usr/lib/python3
65856 /usr/lib/python3/dist-packages
59900 /usr/share/emacs/26.1/lisp
56344 /lib/modules
56340 /lib/modules/4.19.193
56240 /lib/modules/4.19.193/kernel
56236 /lib/modules/4.19.193/kernel/drivers
54708 /lib/modules/4.19.193/kernel/drivers/net
54704 /lib/modules/4.19.193/kernel/drivers/net/wireless
52280 /usr/lib/python2.7/config-aarch64-linux-gnu
50100 /home/linaro/.config
49876 /home/linaro/.config/chromium
48744 /usr/include
48280 /usr/share/scratch
44276 /var/lib/dpkg
41632 /usr/share/icons/Adwaita
41396 /var/lib/dpkg/info
41316 /home/linaro/.config/chromium/Default
40312 /usr/lib/python3/dist-packages/scipy
39964 /lib/modules/4.19.193/kernel/drivers/net/wireless/rockchip_wlan
39952 /usr/lib/python3.7
37324 /usr/share/fonts/truetype/arphic
35040 /home/linaro/.config/chromium/Default/Service WorkerOne deleted file (actually node) is shown as being in use with Quote:

lsof +L1

Code:COMMAND PID USER FD TYPE DEVICE SIZE/OFF NLINK NODE NAME
systemd 1 root 48u CHR 10,242 0t0 0 1171 /dev/rfkill (deleted)Completely lost as to where to go.

Using Debian 10 on ASUS Tinkerboard 2S