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Saturday, 13 May 2017

How to fix storage problem in MTK custom Rom

Hi gyzz today i will tell you how to fix storage bugs

But first you have to know about this :: Read it care fully

Code:
There are two type of storage 

1. One is emulated 
2. Second is non-emulated storage
Quote:
Which Rom support the emulated storage
Mainly stock based Rom has emulated storage script
Quote:
Which Rom support the non-emulated storage
Mainly cm based Rom has non-emulated storage script
First question is that :: How can i under stand which is emulated and which is non-emulated 

Examples

EMULATED STORAGE

Code:
# MTK project .rc configure 

on post-fs-data
#
# SHARED_SDCARD related directory & configuration (begin)
#

# we will remap this as /mnt/sdcard with the sdcard fuse tool
  mkdir /data/media 0770 media_rw media_rw
  chown media_rw media_rw /data/media
  
#
# SHARED_SDCARD related directory & configuration (end)
#

on init
    # See storage config details at http://source.android.com/tech/storage/
    # fix non-shell uid process can not access shared-sd
    mkdir /mnt/shell 0700 shell shell
    chmod 0750 /mnt/shell
    chown shell sdcard_r /mnt/shell
    mkdir /mnt/shell/emulated 0700 shell shell
    mkdir /mnt/shell/emulated/0 0700 shell shell
    mkdir /storage/emulated 0555 root root

    mkdir /mnt/media_rw/sdcard1 0700 media_rw media_rw
    mkdir /storage/sdcard1 0700 root root

 
 #Path
    export EXTERNAL_STORAGE /storage/emulated/legacy
    export EMULATED_STORAGE_SOURCE /mnt/shell/emulated
    export EMULATED_STORAGE_TARGET /storage/emulated

    mount tmpfs tmpfs /storage/emulated mode=0755,uid=1023,gid=1023
    
    # Support legacy paths
    symlink /storage/emulated/legacy /sdcard
    symlink /storage/emulated/legacy /mnt/sdcard
    symlink /storage/emulated/legacy /storage/sdcard0
    symlink /mnt/shell/emulated/0 /storage/emulated/legacy
    symlink /mnt/shell/emulated/0 /storage/emulated/0
    symlink /storage/sdcard1 /mnt/sdcard2
    
on fs
    setprop ro.crypto.fuse_sdcard true

service sdcard /system/bin/sdcard -u 1023 -g 1023 -l /data/media /mnt/shell/emulated
    class late_start

service fuse_sdcard1 /system/bin/sdcard -u 1023 -g 1023 -w 1023 -d /mnt/media_rw/sdcard1 /storage/sdcard1
    class late_start
    disabled
NON-EMULATED STORAGE
Code:
# MTK project .rc configure 

on post-fs-data
    mkdir /data/media 0770 media_rw media_rw
    chown media_rw media_rw /data/media
  
on init
    # Catalog
    mkdir /mnt/media_rw/sdcard1 0700 media_rw media_rw
    mkdir /mnt/media_rw/sdcard0 0700 media_rw media_rw
 mkdir /mnt/media_rw/usbdisk0 0700 media_rw media_rw
    mkdir /storage/sdcard1 0700 root root
    mkdir /storage/sdcard0 0700 root root
    mkdir /storage/usbdisk0 0700 root root

 # Path
    export EXTERNAL_STORAGE /storage/sdcard0
    export USBOTG_STORAGE /storage/usbdisk0
    export SECONDARY_STORAGE /storage/sdcard1
    
    # Links
    symlink /storage/sdcard0 /sdcard
    symlink /storage/sdcard0 /mnt/sdcard
    symlink /storage/sdcard1 /mnt/sdcard2
    symlink /storage/usbdisk0 /usbdisk0
    symlink /storage/usbdisk0 /mnt/usbdisk0
       
   
  
on fs
 mount_all /fstab.mt6582
    setprop ro.crypto.fuse_sdcard true

service sdcard /system/bin/sdcard -u 1023 -g 1023 -d /mnt/media_rw/sdcard1 /storage/sdcard1
    class late_start

service fuse_sdcard0 /system/bin/sdcard -u 1023 -g 1023 -d /data/media /storage/sdcard0
    class late_start

service fuse_sdcard1 /system/bin/sdcard -u 1023 -g 1023 -d /storage/sdcard0 /mnt/media_rw/sdcard0
    class late_start

service fuse_usbdisk0 /system/bin/sdcard -u 1023 -g 1023 /mnt/media_rw/usbdisk0 /storage/usbdisk0
    class late_start
Now all type of problem solution

If internal or SD card not showing 

Now check the init.ssd.rc file and under stand is that rom has emulated storage or non-emulated DONE IDENTIFYING THE STORAGE TYPE

1. Now copy the correct example script from above
2. And replace the fastab.****.rc from stock rom

An Unusual question :: If still not showing What can i do now 

Steps ::
1. Identify the storage type :::  if the rom is emulated then collect the bellow files from stock ROM
and if non-emulated then collect from working cm based Rom storage

REPLACE THIS FILES :: YOU CAN FIND IN SYSTEM/BIN/

Quote:
vold
sdcard
pq
ipod
Complaining :: FU** Still not working 

Last thing and final step is

Look in the build.prop and find for a line 

Code:
ro.mtk_shared_sdcard
IT SHOULD BE LIKE THIS
Code:
ro.mtk_shared_sdcard=1

IF NOT PRESENT ADD THIS LINE

Thank to credit to
xda.com
 pritam dutta,

IF you have any question then please comment bellow


And if it helps you then please give a thumbs up 
Attached Files
File Type: zipemulated.zip - [Click for QR Code] (115.9 KB, 26 views)
File Type: zipnon-emulated.zip - [Click for QR Code] (160.1 KB, 22 views)
Friends, if you like this post, kindly comment below the post and do share your response. Thanks for reading :)

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