[Q] Fstab help topic

Question for yall,

My mother has a tablet... the title one the NuVision T1088 also labeled TMAX T1088
The issue I am having is that there is only 1 GB of system allocated memory with 10 GB of internal. I am consistently getting the "Insufficient space" issue when installing from the play store. I would like to utilize that other memory for installing apps without having to always use APPS2SD or the like

It is rooted using SuperSU

The FSTAB is not familiar to me from other android devices I have looked at I am wondering if anyone here could help me.

Here is a copy of the fstab.

Code:

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# Android fstab file.
#<src>                                                  <mnt_point>        <type>    <mnt_flags and options>                              <fs_mgr_flags>
# The filesystem that contains the filesystem checker binary (typically /system) cannot
# specify MF_CHECK, and must come before any filesystems that do specify MF_CHECK

/dev/block/by-name/system        /system            ext4      ro                                                    wait
/dev/block/by-name/cache        /cache              ext4      noatime,nosuid,nodev,nomblk_io_submit,barrier=1        wait,check
/dev/block/by-name/databk        /databk            ext4      noatime,nosuid,nodev,nomblk_io_submit,barrier=1        wait,check
/dev/block/by-name/data                /data                        ext4      noatime,nosuid,nodev,nomblk_io_submit,barrier=1,noauto_da_alloc wait,check,encryptable=/dev/block/by-name/databk                                                                         
/devices/virtual/block/nandj                          /mnt/sdcard        vfat    rw,relatime,fmask=0000,dmask=0000                                      wait,check,noemulatedsd,voldmanaged=sdcard:auto
/devices/platform/sunxi-mmc.0/mmc_host  /mnt/extsd          vfat    rw,relatime,fmask=0000,dmask=0000                                      wait,check,voldmanaged=extsd:auto
/devices/platform/sunxi-mmc.1/mmc_host  /mnt/extsd          vfat    rw,relatime,fmask=0000,dmask=0000                                      wait,check,voldmanaged=extsd:auto
/devices/platform/sw-ehci.1            /mnt/usbhost1      vfat    rw,relatime,fmask=0000,dmask=0000                                      wait,check,voldmanaged=usbhost1:auto
/devices/platform/sw_hcd_host0          /mnt/usbhost1      vfat    rw,relatime,fmask=0000,dmask=0000                                      wait,check,voldmanaged=usbhost1:auto
/devices/platform/sw-ohci.1            /mnt/usbhost1      vfat    rw,relatime,fmask=0000,dmask=0000                                      wait,check,voldmanaged=usbhost1:auto

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