[Q][IUNI][U3]How to resize/extend system partition capacity for IUNI U3? - Android Q&A, Help & Troubleshooting

Hello Everyone,
A lot of you may not be familiar with IUNI U3, a not famous Chinese android phone brand?
My question is How to enlarge system partition of my IUNI U3?
Information that i have collected about and endeavor on my device is as follows:
Following [HOWTO][GUIDE][Mi3][Mi4]Resize/extend system partition capacity, I have checked the partition on my IUNI U3.
the initial partition design is
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After a series of remove, new, name and convert handling from no. 20 up to no. 12, the final design is as follows
As I guess, I erased some important file in partitions like fsg, fsc, ssd and splash which are not contained in SD card flash package.
-------Explanation Start------
Sorry, i do not know the exact name for SD card flash package and line flash package.
Simple illustration is as follows.
1. SD card flash package is the zip file that we put into SD card (or Internal Storage, treated as SD card ) and then use recovery install zip from SD card to re-install android system, during which partition design will not be modified.
The tree of SD card flash package are
tree
IUNI-U3-BetaV3.0.04-201503300001
├─firmware-update
├─META-INF
│ └─com
│ ├─android
│ └─google
│ └─android
├─recovery
│ └─etc
└─system
├─app
├─bin
├─etc
│ ├─acdbdata
│ │ ├─Fluid
│ │ ├─Liquid
│ │ └─MTP
│ ├─bluetooth
│ ├─cne
│ ├─dhcpcd
│ │ └─dhcpcd-hooks
│ ├─firmware
│ │ ├─ar3k
│ │ │ └─1020201
│ │ ├─ath6k
│ │ │ └─AR6004
│ │ │ ├─hw1.2
│ │ │ ├─hw1.3
│ │ │ └─hw3.0
│ │ └─wlan
│ │ └─prima
│ ├─gn_camera_feature
│ │ ├─arcsoft
│ │ │ └─maskfile
│ │ ├─res
│ │ │ └─picture_frame
│ │ └─scalado
│ │ └─warp
│ ├─hostapd
│ ├─logmask
│ ├─permissions
│ ├─ppp
│ ├─security
│ │ └─cacerts
│ ├─srs
│ ├─surround_sound
│ └─wifi
├─fonts
├─framework
│ └─webview
│ └─paks
├─iuni
│ └─aurora
│ ├─change
│ │ ├─desktop
│ │ └─lockscreen
│ │ ├─City
│ │ ├─Color
│ │ ├─Dream
│ │ ├─Green
│ │ └─Timely
│ ├─gallery
│ │ └─maskfile
│ └─launcher
│ └─config
├─lib
│ ├─crda
│ ├─drm
│ ├─egl
│ ├─hw
│ ├─modules
│ │ ├─ath6kl-3.5
│ │ └─pronto
│ ├─soundfx
│ └─ssl
│ └─engines
├─media
│ └─audio
│ ├─alarms
│ ├─notifications
│ ├─ringtones
│ └─ui
├─priv-app
├─sdcard
│ ├─DCIM
│ ├─lyric
│ └─music
├─tts
│ └─lang_pico
├─usr
│ ├─icu
│ ├─idc
│ ├─keychars
│ ├─keylayout
│ └─share
│ ├─bmd
│ └─zoneinfo
├─vendor
│ ├─etc
│ └─lib
│ ├─drm
│ ├─egl
│ ├─hw
│ ├─rfsa
│ │ └─adsp
│ └─soundfx
└─xbin
Click to expand...
Click to collapse
2. Line flash package is the set of files (usually in zip files, namely under a root directory) that we use special computer software to re-install android phone system when our phone is connected to computer via USB cable.
The tree of Line flash package(which contains many .img files) is
tree /F
NBL8910A01_A_platform_T0401
│ boot.img
│ cache.img
│ cache_1.img
│ cache_2.img
│ cache_3.img
│ cache_4.img
│ emmc_appsboot.mbn
│ Gionee_info.ini
│ NBL8910A01_A_platform.log-2015-02-05-01-41-40
│ NBL8910A01_A_platform.qcn
│ persist.img
│ persist_1.img
│ ramdisk-recovery.img
│ ramdisk.img
│ rawprogram_unsparse.xml
│ rawprogram_unsparse_for_factory.xml
│ recovery.img
│ system.img
│ system_1.img
│ system_2.img
│ ...
│ tree_nbl.txt
│ userdata.img
│ userdata_1.img
│ ...
│ vmlinux
│
└─bp_image
8974_msimage.mbn
adsp.b00
...
adsp.mdt
checksparse.py
cmnlib.b00
...
cmnlib.mbn
cmnlib.mdt
contents.xml
createAllZeroFile.py
dd.py
dsp2.mbn
dummy_bin.bin
fs_image.tar.gz.mbn.img
gpt_backup0.bin
gpt_both0.bin
gpt_main0.bin
hwio.cmm
isdbtmm.b00
...
isdbtmm.mbn
isdbtmm.mdt
keymaster.b00
...
keymaster.mdt
load_coredump.cmm
lsusb.py
mba.b00
mba.mbn
mba.mdt
mc_v2.b00
...
mc_v2.mbn
mc_v2.mdt
mjsdload.cmm
modem.b00
...
modem.mdt
MPRG8974.mbn
msg_hash.txt
msp.py
NBL8910A_Release_Note.txt
NON-HLOS.bin
NPADump.cmm
partition.xml
patch0.xml
playready.b00
...
playready.mbn
playready.mdt
prog_emmc_firehose_8974.mbn
ptool.py
qdsp6sw.mbn
rawprogram0.xml
recover_f3.cmm
rpm.mbn
rpm_log_bfam.py
rpm_npadump.cmm
rpm_ulogdump.cmm
sampleapp.mbn
sbl1.mbn
sdi.mbn
singleimage.py
singleimage_partition_8064.xml
singleimage_partition_8930.xml
singleimage_partition_8960.xml
singleimage_partition_8974.xml
splash.img
testsparse.py
tqs.b00
...
tqs.mdt
tz.mbn
tzbsp_no_xpu.mbn
ULogDump.cmm
wcnss.b00
...
wcnss.mbn
wcnss.mdt
widevine.b00
...
widevine.mbn
widevine.mdt
Click to expand...
Click to collapse
-------Explanation End------
So the good news now is, I can redesign IUNI U3 partition design via adb shell. the problem is i destroyed my original system and when i re-install the system using SD card flash package. The WiFi cannot work!!! And when i re-install the system using Line flash package, the partition design will be come back to initial design.
So now, I want to know how to modify Line flash package so that I can have a larger system partition initialized during my re-install process?
Hope to get help from you.
Johann,
GMT +8, 13:26 2015/4/25

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Any Android Geek Here?

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happyjohann said:
Click to expand...
Click to collapse
I will get a iuni u3 maybe next week then I will try to resize my system partition but in the other way I will srink it a little, maybe 500MB is enougth.
In otherside is possible to make for example a 4GB usrdata partition and the the left space for special "sdcard" vfat partition?, because I would like to mount it as massive storage for my car mp3 , because the stock mtp is not recognised.

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Hey! I just got a solution, well is a workarround.
As you want to increase system partition moving others partitions the solution is "quite" easy.
First of all install your firmware from flash tool.
Then copy all the intermediate partitions to a file, using the dd command to a partition with space then copy to your computer with adb pull:
dd if=/dev/block/mmcblk0p19 of=/cache/p19tmp.part
This will copy as binary whole the partition, problem is that you can't resize it as is a unknown filesystem. but you will be able to repartitioning the others files and move the intermediate partitions to get the necessary free space.
I found a limitation about number or partition you can't partition more than 20 partitions, WTF!! is gpt it has more than 64 primary partitions on a limited kernels, and more than 128 on "uncapped kernels".
So In my case I'm trying to make a userdata of type ext4 of about 2GB and the left space to vfat simulated sdcard that I will be able to mount as massive storage.
I'm considering delete the cache partition and map as /system/cache folder but I don't have any tool to unpack the kernel image. (maybe mtk boot tools?)
Can you tell me all the available tools for this and the msm87xx platform to manipulate the kernel and other things?
Thank you!