Help with MIUI V6 on MLAIS M9

Hello!
I have a MLAIS M9 (MTK6592) smartphone with Android OS 4.4.2 (before)
and i can with success a port of MIUI V6 (5.7.2) to my chipset.

I installed the miui here and now I have problem with storage mount points:

MIUI 5.7.2:
1- The SD Card only shows with LOST.dir folder

2- The space in SD Card are small and the "Phone Storage" is shared space with SDCard (My SDCard have 8GB and Phone storage have 8GB too, but in PC the device shows 5MB in SDCard and shows 15,8 GB in "Phone storage"

MIUI 5.5.1:
1- In MIUI 5.5.1 the problem with external space isn't exist, but the SDCard is known by "Phone Storage" and the phone storage is known by "SD Card" and i want solve this problem too.

i am trying solve this problem with .rc and fstab files but after restart the device the old settings is set back!