A2SD, partitioning and Nand Switching (internal to external) for Optimus 3D

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Please someone more experienced than me check the prosedure!!! Till I remove this line go with extreme caution
I have an enormous amount of applications inherited from the partition-able optimus 2x. I got optimus 3D as an upgrade but I couldn’t intall not even half of them. So I was trying to find ways to repartition /data as I had done with optimus 2x but with no success.
Then I got an idea... why not A2SD style? So it begins

Disclaimer: Have in mind that I’ve done nasty stuff which could brick the phone badly. I take no responsibility for breaking your phone even if you follow my guide perfectly. I am no developer and I can make mistakes so please don’t continue if you don’t understand what I am telling you to do. Also be careful since I dont know how future lg updates will react

My composition is: Thiaiz Rom V0.1, clockworkmod touch, rooted ofc and I have installed most drivers found on this forum for o3d.

Before you begin get a backup of your internal memory, sd card, titanium backup and nand backup to a pc. You WILL loose internal memory data. The rest just to be safe....

Drawbacks: Your internal memory will be around 2-3gbs smaller and wont be able to be mounted to the pc. You could brick your phone.
While all these can be done with a cwm zip script I did it manually. Also since my phone works fine know and my time is short I dont really want to go to the reformating coping restoring backups again. This means that while I write this guide I dont actually run these command only checking them if they are correct.

Lets start.
First shutdown your phone. Open it to recovery by pressing down button and power for 7-8 seconds. Release when you see LG logo. While in recovery connect your device with the pc with a usb cable. Open command prompt on your windows pc and do a
adb shell
Now you are probably ready to send commands. If not use a guide like this http://www.addictivetips.com/mobile/what-is-adb-and-how-to-install-it-android/

at the shell do a

# cd /dev/block
#ls

you will see all your partitions. mmcblk0 is the internal memory and mmcblk1 is the sd card.

# parted mmcblk0
(parted) print

now you see the partitions
You should see something like this

Number  Start   End     Size    File system  Name      Flags
 1      131kB   262kB   131kB                x-loader
 2      262kB   393kB   131kB                nv1
 3      393kB   524kB   131kB                nv2
 4      524kB   1049kB  524kB                u-boot
 5      1049kB  11.5MB  10.5MB               kernel
 6      11.5MB  22.0MB  10.5MB               recovery
 7      22.0MB  651MB   629MB   ext3         system
 8      651MB   1725MB  1074MB  ext3         userdata
 9      1725MB  1859MB  134MB                fsswap
10      1859MB  1926MB  67.1MB  ext3         cache
11      1926MB  1928MB  2097kB  ext3         lgdrm
12      1928MB  1929MB  1049kB               divxkey
13      1929MB  1950MB  21.0MB               fota
14      1950MB  1955MB  4194kB  ext3         misc
15      1955MB  7944MB  5989MB  fat32                  msftres

we are going to work on partition 15 starting by deleting it. Be very carefull here what you delete

(parted) rm 15

now we want to create 2 more partitions. The 1955-4944 and 4944-7944 will give you around 3gb for apps and 3gb for internal memory. Tweak it at your needs but always follow the numbers. I meant if your print gave you this output

15      1955MB  7945MB  2989MB  fat32

use 7945 and not 7944

(parted) mkpartfs primary fat32 1955 4944
(parted) mkpartfs primary ext2 4944 7944

now the command print should give you two more partitions

15      1955MB  4944MB  2989MB  fat32                  msftres
16      4944MB  7944MB  3000MB  ext2

quit parted to update the ext2 to ext3

(parted) quit
#mke2fs /dev/block/mmcblk0p16
#tune2fs -j /dev/block/mmcblk0p16

Now our phone is ready for A2SD. Reboot the phone.
After finish rebooting continue via adb or terminal (I used terminal because I was in a 3 hours trip with bus :P) and es file explorer with root and rw options on

we need to tweak /etc/vold.fstab to change the mount points. You can change it with es file explorer
My file is:

dev_mount sdcard /mnt/sdcard auto /devices/platform/mmci-omap-hs.0/mmc_host/mmc1
dev_mount extsdcard /mnt/sdcard/_ExternalSD 15 /devices/platform/mmci-omap-hs.1/mmc_host/mmc0

then we need to create the mount point for our new partition. I did it at /mnt/a2sd but you can do it anyware including the standard /system/sd

#mkdir /mnt/a2sd
#mkdir /mnt/emmc

now we need to mout our new partition everytime the system starts. I opened /etc/init.d/thiaizSDbooster and added few lines

mkdir /mnt/a2sd
mount -w /dev/block/mmcblk0p16 /mnt/a2sd
mkdir /mnt/emmc
mount -w /dev/block/mmcblk0p15 /mnt/emmc
ln -s /mnt/a2sd/data/app /data/app
ln -s /mnt/a2sd/data/data /data/data

dont forget to make the correct permitions again after the edit

now you need to mount the new partition to your mount point

#mount -w /dev/block/mmcblk0p16 /mnt/a2sd

and copy the data files you will link there

#cp -a /data /mnt/a2sd

now careful youll delete the /data/app and /data/data from /data

#rm -r /data/app
#rm -r /data/data

and create the links

#ln -s /mnt/a2sd/data/app /data/app
#ln -s /mnt/a2sd/data/data /data/data

Reboot the phone and you are ready to go!
To mount the sd card to the pc you will need an app from market https://market.android.com/details?i...rd.widget.free
Look atached images for what you get

want to give it a try but I need to know if there is a way to revert back if anything goes wrong. Will a restore of a previous backup return things to normal?or flashing a kdz? thanx anyway.any try to improve our phones is worth praize...

Originally Posted by jimakos29

want to give it a try but I need to know if there is a way to revert back if anything goes wrong. Will a restore of a previous backup return things to normal?or flashing a kdz? thanx anyway.any try to improve our phones is worth praize...

Make a nand back-up in another sd card, if you re lucky and can still boot upto recovery then you can restore or you can boot to download mode. Last resort will be to flash a bin or kdz file then restore your nand back up.

I bricked my phone 5 times in one month 2 times in 1 day. I still figured how to restore, just relax and think before you do crazy stuff, all the answers are in XDA.

---------- Post added at 04:44 AM ---------- Previous post was at 03:49 AM ----------

@orlox tested it and gives me phone memory damage, forgot to pull the logs and do some ss, well anyways I won't be doing this one, I was setting up for the s2e and link2sd stuff -- that one is not that risky.

Originally Posted by mtvtitan

tested it and gives me phone memory damage, forgot to pull the logs and do some ss, well anyways I won't be doing this one, I was setting up for the s2e and link2sd stuff -- that one is not that risky.

The "damage part" is because you probably didnt change the vold file. Its not something to worry. After you tell vold what partition to mount (15) it will be ok

Originally Posted by orlox

The "damage part" is because you probably didnt change the vold file. Its not something to worry. After you tell vold what partition to mount (15) it will be ok

I figured that one...

have you finished the guide? all ok?

Originally Posted by orlox

have you finished the guide? all ok?

not yet, got other stuff in hand... i'll try to report tom* its already 2am here and have work at 4am -- cooked.

I made a mistake somewhere and am stuck. Can't sleep now, I'll have to figure this thing thorough.

---------- Post added at 07:20 AM ---------- Previous post was at 07:12 AM ----------

btw you can try this --> install link2sd let it install the script needed to mount 2nd sd part, then edit it (init.d folder)

--> add this before mounting sdext2
sleep 2

mkdir /sd-ext

sleep 2

--> then after mounting sdext2 insert this
sleep 2

mount -o bind /data/sdext2 /sd-ext

-----------------------------------------
install s2e

move dl cache (dont move any apps, let link2sd do that)

reboot.
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works with thiaz boot image only

the risk is low and would not probably brick your phone but try it at your own risk (disclaimer) --> this is generic, do your mods.

any problems will discuss after I unbrick my phone lol.

Generic scripts are not working well. I was trying with dark tremors first. I think manual is safer. Also Someone may want to partition sd instead of nand. Its safer but I think its a waste of space.
The good thing is that parted works so we don't need a tool like nvflash. Also /data had a limit at 2GB I think. With a2sd there is no limit.