[Q] Help with mounting /data/media to /sdcard ? - Android Q&A, Help & Troubleshooting

I posted this on XDA Visitor a few hours ago. Was told to post it here.
I got an Infinix Zero X506 (Android 4.4.2) a few days ago and I wanted to root the device.
So anyway the phone is rooted and everything, but I noticed that the Mobile Storage's Total Space is 0 Bytes.
I freaked out. I thought all my data was deleted, but when I went into /data/media using root explorer, all my files were there.
I read somewhere that android 4.4 fuses the /data/media folder to /sdcard on boot, so that the so-called "Mobile Storage" is not a separate partition but it is a folder mounted as a partition.
During the root I might have messed up with all the recovery images and stuff.
So how can I mount the /data/media folder as phone storage?
And am I doing anything wrong here?
And can anyone explain to me the difference between /sdcard, /storage/sdcard0, and /storage/sdcard1 ?
Some screenshots
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microsd card: vfat issues

Hi people
Very strange issue (google does not help). There is Galaxy S III 9300 Intl, with the latest stock 4.1.2, rooted. There are microsd cards (tested with 2). There is a number of media files. I am copying those files to the microsd card (does not matter - using MTP or pull microsd and then copy directly from PC). Then I am rebooting the phone. And ... vfat is broken. In particular, the directory "Russian Music" is renamed to µUSSIA~1 (I suspect, vfat is losing the long name leaving only 8.3) - and it is empty (was full of files downloaded from youtube). A number of files appear in LOST.DIR - obviously the names are useless like 132829, 133145 etc...
I disabled media storage. Tried to uninstall as many apps as possible.
Anyone encountered anything like that?
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[Q] internal memory size problem

Hi,
I have rooted old phone with low internal storage and Link2SD installed.
The problem is, that even if I have almost all aplications linked (by Link2SD) to SD card, I've got low free space on internal storage.
I've executed "du -h -m -d 1" command to get sizes of all subfolders in "/data" folder (which I suppose is internal storage) and the results are in attached file.
Whole /data directory size is 297 MB.
/dalvik-cache + /sdext2 is 207 MB in total. Other folders' sizes are negligible.
My question is: Where is the difference of 297-207=90 MB?
Thanks for replies
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Mounts2SD and EXT4-partition?

Hello XDA!
(Is this the right place for this question? Is this really "hacking" for example?)
Soo , im trying to use the Mounts 2SD app to utilize a EXT4 partition on my 32 GB sdcard. The first partition is a FAT32 (this is more windows friendly?) and the second one is the EXT4 partition of about 12GB.
In the Mounts 2SD app I have installed “Startup Script” (6.0.20).
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But on "External" it says "Not Mounted". Hmm, should it be mounted there?
And when i reboot the phone the /data/ partitions still doesn't seems to be mounted in the EXT4-partition on the SDcard. Someone who know how i could do to use the EXT4-partition on the SDcard?
And if someone know it would be interesting to know exactly what partitions that one usally move to the EXT4-partiton on the SDcard. (The /cache/ and the "dalvik" for example?)

Android with more that 60 partitions and 50gb use internal memory!!! Pls help!

After having done a procedure to undo my Le Max 2 X829 (due to infinite loop) I only have 9GB of internal space available (the device has 64GB of internal memory)
Dai I noticed that the internal memory has more than 60 partitions and one of them (sda9) is more than 56gb!
Please help me ... I can install the ROMs and TWRP but there is no internal space on the device to be able to use it.
Here is the photo of #adb shell> cat /proc /partitions
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Try a factory reset if you have a working rom now. Worked for me when I unbricked my Le Max with EDL using a developer rom.
When it first booted it only showed 9GB of internal memory.
Ok , an older thread; I had the same issue. I found the solution in reformatting the data with TWRP.
Described here: https://forum.xda-developers.com/le-max-2/help/internal-disk-10-30gb-how-recover-disk-t3727212

Data is not found on the memory of the android phone in the file manager application

All android device memory data is not found in the file manager. Although many applications are installed on the device
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nhanc10x5 said:
All android device memory data is not found in the file manager. Although many applications are installed on the device
Click to expand...
Click to collapse
What device are you using?
Some devices use sdcard1 as the mount point for the extsd.
Check for a mount called sdcard or internal.
If that is your external, then it's gonna be empty until you move app data to SD
Do some research. The directory where most apps are installed is not available to the user without root access.
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