Internal storage missing: Nexus 7 16G down to 5.8G TOTAL My Nexus 7 now believes it has only 5G internal storage. It's shown in storage properties.

I noticed it after factory reset, and then a 4.3 update (I remember getting 4.3 OTA update twice, is it possible?)

I installed ClockworkMod recovery (back when it was on 4.2), but never rooted it.

No storage space analyzers show hidden files or such. Rebooting doesn't change anything. 

I found /sdcard/0 directory with a content of my previous sdcard before a factory reset, deleting it freed some space, but total is still at 5.8G.

I found one complaint about a similar situation, but it's drowned in a simpler problems and was never answered.

df output:

Filesystem               Size     Used     Free   Blksize
/dev                   487.4M    32.0K   487.3M   4096
/mnt/secure            487.4M     0.0K   487.4M   4096
/mnt/asec              487.4M     0.0K   487.4M   4096
/mnt/obb               487.4M     0.0K   487.4M   4096
/system                639.8M   515.7M   124.1M   4096
/cache                 436.0M     7.3M   428.7M   4096
/data                    5.9G     2.7G     3.2G   4096
/mnt/shell/emulated      5.9G     2.7G     3.2G   4096
/mnt/asec/com.teslacoilsw.launcher.prime-1     2.0M    84.0K     1.9M   4096
/mnt/asec/com.loudcrow.goodnightmoon-1     5.0M     3.4M     1.6M   4096


cat /proc/partitions output:

major minor  #blocks  name
   7        0       2111 loop0
   7        1       5229 loop1
 179        0    7467008 mmcblk0
 179        1      12288 mmcblk0p1
 179        2       8192 mmcblk0p2
 179        3     665600 mmcblk0p3
 179        4     453632 mmcblk0p4
 179        5        512 mmcblk0p5
 179        6      10240 mmcblk0p6
 179        7       5120 mmcblk0p7
 179        8        512 mmcblk0p8
 179        9    6302720 mmcblk0p9
 179       32       2048 mmcblk0boot1
 179       16       2048 mmcblk0boot0
 254        0       2110 dm-0
 254        1       5229 dm-1


mount output:

rootfs / rootfs ro,relatime 0 0
tmpfs /dev tmpfs rw,seclabel,nosuid,relatime,mode=755 0 0
devpts /dev/pts devpts rw,seclabel,relatime,mode=600 0 0
proc /proc proc rw,relatime 0 0
sysfs /sys sysfs rw,seclabel,relatime 0 0
selinuxfs /sys/fs/selinux selinuxfs rw,relatime 0 0
debugfs /sys/kernel/debug debugfs rw,relatime 0 0
none /acct cgroup rw,relatime,cpuacct 0 0
tmpfs /mnt/secure tmpfs rw,seclabel,relatime,mode=700 0 0
tmpfs /mnt/asec tmpfs rw,seclabel,relatime,mode=755,gid=1000 0 0
tmpfs /mnt/obb tmpfs rw,seclabel,relatime,mode=755,gid=1000 0 0
none /dev/cpuctl cgroup rw,relatime,cpu 0 0
/dev/block/platform/sdhci-tegra.3/by-name/APP /system ext4 ro,seclabel,relatime,user_xattr,acl,barrier=1,data=ordered 0 0
/dev/block/platform/sdhci-tegra.3/by-name/CAC /cache ext4 rw,seclabel,nosuid,nodev,noatime,errors=panic,user_xattr,acl,barrier=1,nomblk_io_submit,data=ordered 0 0
/dev/block/platform/sdhci-tegra.3/by-name/UDA /data ext4 rw,seclabel,nosuid,nodev,noatime,errors=panic,user_xattr,acl,barrier=1,nomblk_io_submit,data=ordered 0 0
/dev/fuse /mnt/shell/emulated fuse rw,nosuid,nodev,relatime,user_id=1023,group_id=1023,default_permissions,allow_other 0 0
/dev/block/dm-0 /mnt/asec/com.teslacoilsw.launcher.prime-1 ext4 ro,dirsync,seclabel,nosuid,nodev,noatime,user_xattr,acl,barrier=1 0 0
/dev/block/dm-1 /mnt/asec/com.loudcrow.goodnightmoon-1 ext4 ro,dirsync,seclabel,nosuid,nodev,noatime,user_xattr,acl,barrier=1 0 0
I had the same problem as OP flashing to 4.4.3 on a Nexus 7 16GB (2012).  My total storage as reported by the storage module of the settings app was like 6GB and running df from BusyBox/adb was reporting the same.  This is clearly a partition table problem and not hidden files or anything else.  I think that the problem was caused by several failed/aborted flashes that I did.  I was able to fix it by reflashing from adb.

In other words, I downloaded the latest image, decompressed it, and ran the flash_all.sh script.  (Of course after running adb reboot-bootloader).

For the record, I did NOT have to change the commands to fastboot format X.  

It would be nice to understand this problem better but for the time being, going from ~6GB to >13GB of usable space is quite a relief.