S4 running low on space

I have an S4 with OmegaRom v42 5.0.1 and as you can see below it is showing as internal memory almost full but I cannot find out where the space is.
when I updated from 4.3.1 to 5.0.1 I could still al ot of the old system files so I am guessing they are still around.
ES Explorer is not able to tell me where this wasted space is.

Is there anything I can do from recovery to clear some room?
Or another app which can tell me what exactly is taking up all this space?

Oh I also have FolderMount installed and I have some games which are stored on the SD card, that might be the reason for the erroneous size.

Attached Thumbnails

 

REVIEW EXCHANGE (1 for 1) - Match Memory: Space

Download it, rate it, comment it and g1+ it, and keep it for several days. I will do same for your app/game .
Here is the link https://play.google.com/store/apps/d...tchmemoryspace

How much usable free space on 16gb 5x?

Can anyone that has a new out of the box 5x, 16gb tell me how much free storage space there is on the phone?

Thanks!

Our new game on market. Check it out, it s free. Match Memory: Space

Hello everyone, we would appreciate very much, if you take some of your time, and check out our latest game.

Here is the link: https://play.google.com/store/apps/d...tchmemoryspace

More our android games and apps at http://roqaj.com/

Short description of game:

Match Memory: Space is funny, educational puzzle memory game about the universe for toddlers, babies, preschoolers, kids and adults. It helps players to improve memory and mental and brain skills. Exercise your mind. Improve your IQ. Test your memory capacity and quickness. There are many benefits of playing Match Memory: Space - especially for babies and kids. Game helps them to improve their recognition while they play the game.
HOW TO PLAY MATCH MEMORY: SPACE

- At first player see cards faced down. When they tap on one of them on the board they will see an cute space object image.
- With the next tap kids have to find another same space object in order to pair them. When they are paired they disappear.
- Game has three different difficulties (easy, medium and hard).
- Try to find and match all cards as fast as possible in order to recive more valuable medal.

MATCH MEMORY - FEATURES AND BENEFITS:

- Training mind
- Improve your brain skills.
- Cute sounds and beautiful, relaxing music.
- Develops concentration, observation and your memory talent.
- IQ improvement.
- Beautiful space object images.
- Space memory game will keep your kids entertained.

Match Memory: Space is beautifully designed game, with nice and intuitive interface which is easy to use.

Enjoy!