Author Topic: Hacking the LGL38C - More app install space - How to  (Read 75625 times)

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Re: Hacking the LGL38C - More app install space - How to

« Reply #50 on: April 20, 2014, 11:33:22 AM »
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  • DmC.Dante

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    Disk /dev/block/mmcblk0: 1954 MB, 1954545664 bytes
    1 heads, 16 sectors/track, 238592 cylinders
    Units = cylinders of 16 * 512 = 8192 bytes

                  Device Boot      Start         End      Blocks  Id System
    /dev/block/mmcblk0p1   *           1           3          20  4d Unknown
    Partition 1 does not end on cylinder boundary
    /dev/block/mmcblk0p2               3         128        1003+ 45 Unknown
    Partition 2 does not end on cylinder boundary
    /dev/block/mmcblk0p3             129         256        1024  46 Unknown
    Partition 3 does not end on cylinder boundary
    /dev/block/mmcblk0p4             257      238592     1906688   5 Extended
    Partition 4 does not end on cylinder boundary
    /dev/block/mmcblk0p5            8193        8704        4096  47 Unknown
    /dev/block/mmcblk0p6            8705        9216        4096  2c Unknown
    /dev/block/mmcblk0p7            9217        9728        4096  58 Unknown
    /dev/block/mmcblk0p8            9729       12800       24576  77 Unknown
    /dev/block/mmcblk0p9           12801       13824        8192  48 Unknown
    /dev/block/mmcblk0p10          13825       14336        4096  4a Unknown
    /dev/block/mmcblk0p11          14337       14848        4096  4b Unknown
    /dev/block/mmcblk0p12          14849       18432       28672  49 Unknown
    /dev/block/mmcblk0p13          18433       22016       28672  6c Unknown
    /dev/block/mmcblk0p14          22017       70656      389120  83 Linux
    /dev/block/mmcblk0p15          70657       71680        8192  83 Linux
    /dev/block/mmcblk0p16          71681       80896       73728  83 Linux
    /dev/block/mmcblk0p17          80897       81920        8192  60 Unknown
    /dev/block/mmcblk0p18          81921       82944        8192  83 Linux
    /dev/block/mmcblk0p19          82945       84480       12288  6b Unknown
    /dev/block/mmcblk0p20          84482      150016      524280  89 Unknown
    /dev/block/mmcblk0p21         156017      236032      640128  83 Linux
    /dev/block/mmcblk0p22         236034      238080       16376  83 Linux
    /dev/block/mmcblk0p23         238082      238592        4088  ff Unknown

    I recalculated the START and END cylinders so I could keep 512MB for the internal SD partition

    Sent from my LG-L38C using Tapatalk 2

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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #51 on: April 21, 2014, 08:37:51 PM »
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  • notahack

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    dog gonnit I got another phone and  am having troubles AGAIN.  I swear I followed the instructions to crossing the t and dotting the i.

    The table looks like it should.


    I am not going to get out of adb mode that is for sure.

    I am at step 10, restore the rom

    it will not mount /emmc

    it doesn't seem to see my extended card where cwm backups are. It isn't even listed as an option to try to mount. I can mount usb memory and it pops up in windows.

    I was able to push a zip of the rom to sdcard but it will not install, i suspect because of not mounting emmc

    I gather that emmc mounts to one of the /dev/block/mmcblk0p* entries and so does the extended card. Which one?

    what would be commands to map the mounts I can't get working.

    Computer just gonna sit here until I win. I do not want another brick.

    update
    ---------

    I think I am seeing something in the /etc/fstab table that would keep it from mounting

    /dev/block/mmcblk0p20  /emmc vfat rw

    /dev/block/mmcblk0p20   /sdcard vfat rw

    also in the table the good man above posted for me p20 is set to type 89? how do I do that?

    I am going to beat this, just a mismatch of file system types that keep it from mounting?

    update
    =====

    endeavor to persevere works!!!

    big problem was I could not get /emmc to mount

    looking at the partition table it didn't seem that the mke2fs command had any effect on mmcblk0p20.

    the fstab had it set to vfat

    i edited the fstab to change it to ext4

    still recovery wouldn't mount /emmc

    but through adb a manual mount command did

    YEAH!!!!!

    time to restore baby!!

    more teasing though. I could get it to see the zip I moved over but it gave me an abort.

    so I made the path /clockworkmod/backup and adb pushed the directory.

    did a regular restore AND

    VICTORY!!!!!

    It says I have

    total memory - 166mb

    sd card 7.39 gb (i put an 8 gig card in)

    system memory

    865mb available

    I signed into google store and did some downloads just to make sure that worked.

    We be bad.

    Next step to nirvana is to see if i can get the phone number and minutes from the phone I bricked.





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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #52 on: April 22, 2014, 06:48:35 AM »
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  • DmC.Dante

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    Can't remember how I set partition type, I'll figure it out after work and let you know

    Sent from my LG-L38C using Tapatalk 2

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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #53 on: April 22, 2014, 07:12:02 AM »
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  • notahack

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    Dante I appreciate you jumping in and helping me but at this point it seems to work dandy and I be skeered of further tinkering.

    Man nothing feels better than release after having your foot caught in a bear trap.

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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #54 on: April 23, 2014, 12:58:18 PM »
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  • aquatikz

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    if your lost and trying to figure out where to enter all this coding stuff go here You are not allowed to view links. Register or Login this will walk you through installing and using adb. 
    Once you get that.  follow the steps on this page. just an FYI

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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #55 on: April 30, 2014, 08:34:25 AM »
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  • kreaturefeature

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    thanks for this post, I tried this using stock rom, had to install busy box to get fdisk to work, deleted the last 4 partitions as per the guide, and when i went into adb recovery the phone got stuck in a boot loop and adb could not find fdisk, adb was still reading the phone, for a moment I thought I had bricked the phone because fdisk was missing from the stock rom after deleting the partitions, my knowledge of linux and command line is very limited, what I ended up doing was enter recovery mode and loaded the custom rom from this forum, the phone was still stuck but the custom rom allowed me to finish the mod and access fdisk, it was a lil nerve racking but it worked out for me in the end,. I'm reading 0.90gb system and 166mb internal, once the phone was back up I went back into recovery and reinstalled my stock rom with all my settings intact. Thank you very much, This thread was extremely helpful
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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #56 on: May 01, 2014, 01:13:58 AM »
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  • Izaya

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    Awesome! Thanks! I just got this phone almost a week ago and was rather bummed when I ran into that low system storage space for app installs. Looked around for help and finally found this place and this is just what I was looking for. I'd never done anything like this before so I did have to search up a few more things like getting an adb and jdk on to my pc. (The one click root and cwm was very nice and easy though.) Once I got that, following the steps was a cinch.

    To note though, to perform Step 8 you need to adb reboot recover first or else it won't recognize the partitions. Other than that it was smooth going. I now have plenty of room to get a few more apps and better enjoy the phone.
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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #57 on: May 01, 2014, 05:13:58 AM »
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  • nobreak1970

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    This worked brilliantly!
    Thank you.
    :)
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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #58 on: May 12, 2014, 03:19:38 PM »
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  • gargash

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    Am i Doing something wrong i have it partitioned correctly but its not allowing me to see any memory card that i put in on the Arearom i restored from. Is there a way to do way with the internal storage to make it all system memory and us the SD card slot as majority of other phones or can i ABD in and do something like make it 1 block for the fat32 section. I have had to restore 3 times now trying to get this SDcard to read in the files system correctly. This might be even a seprate issue but i know i am able to get everything working but the actual SD card reading. i tried the 4gb it came with, all tested with single and dual primary fat32 and ext4, an 8gb, a 32gb and a 64gb, all different makers and get nothing.

    Any ideads?
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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #59 on: May 13, 2014, 06:07:54 AM »
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  • DmC.Dante

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    @gargash, when you restore, do you wipe /data & /cache first? Are you using your own nandroid backup or the clean AreaROM? Have you tried both?

    I think I read this phone supports UP TO 32GB SD cards; unless I'm wrong forget the 64GB card. As far as modifying mounts, you'd have to extract boot.img to a PC, edit init.rd, repack the .img and push to the phone...which may brick your phone if you don't know exactly what you're doing.

    Anyone, feel free to correct or confirm my thoughts.

    Sent from my LG-L38C using Tapatalk 2

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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #60 on: May 15, 2014, 08:47:41 AM »
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  • gargash

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    You are not allowed to view links. Register or Login
    I saw it referenced as fat32 somewhere.... or at least I though I did.  ;D


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    Rjgee, when you decided to repartition why did you decide to change the format of p20 to from ext4 to fat32?
     
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    ...couldn't I just repartition p20 and p21 to be 1.2g, ext4, and mount it to /data ?


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    ...#not even sure if this is necessary...
    adb shell
    mke2fs -t ext4 /dev/block/mmcblk0p21
    mke2fs -t ext4 /dev/block/mmcblk0p22
    mke2fs -t fat32 /dev/block/mmcblk0p20

    BTW. Thanks for establishing partitioning method for the lgl38c.

    So in doing this, did you in into the issue of the first partition of the micro sdcard mounting?
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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #61 on: May 24, 2014, 11:03:17 PM »
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  • CHolland8776

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    Hey guys. I was able to root this phone, install Arearom Dynamic 1.0, and I wanted to get the room talked about in this page. I went through and followed the directions and when I did the last reboot my phone went into emergency mode. I have tried everything I can to get it out of it. Nothing is recognizing the phone or anything. Is there anything I can do?

    Thanks.

    I think I'm having a similar problem. I installed the one-click root, then CWM'd, and have a clockwork backup. I followed all of the steps and got the expected results, up until step 8. Then at step 8 I tried adb shell
    mke2fs -t ext4 /dev/block/mmcblk0p21, even though the steps indicated it might not be required. I received some kind of error message and I should have recorded it but I didn't.

    Since step 8 didn't seem to work I just moved forward to step 9, adb reboot restore. When I tried that I got a message that said "error: device not found". My screen on the phone went yellow and said "Emergency Mode!!".

    Now that is all I can get. I tried pulling the battery and restarting. Same result. Then I tried pulling the battery and SD card and restarting. Same result. I've tried the power+volume down+home and you guessed it, same result.

    My PC no longer recognizes the phone. When I plug it in via USB nothing comes up in the device manager and the phone screen goes directly to "Emergency Mode!!".

    Any suggestions on what I can do now?

    Thanks!

    Cory

    Edit - Nevermind, I just threw that phone in the trash and bought another one. Took the instructions from the top and I also installed BusyBox. Works perfectly now. Thanks!
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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #62 on: May 27, 2014, 06:13:21 PM »
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  • smallhagrid

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    A little more help & info - please ??

    I have an LGL38C and I am new to Android, but not a total noob otherwise.
    Using the CLI is comfortable for me as long as I know what to do correctly.

    BTW=>
    The Net10 is not activated on my phone and I do not plan to do so - just going to use it via Wifi.

    The phone has been rooted using the procedure posted here by DroidHost entitled:
    "One Click Root, CWM and Unlock Kernel"
    It was wonderfully easy and seemed to work perfectly as described.
    (I have verified root access via terminal emulator also.)

    Have installed JDK, ADB, Fastboot and the needed drivers on my PC - and have verified connection to my PC via ADB.

    I have looked into Busybox, but do not have it yet.

    Titanium Backup is installed, but I have not made any backups yet.

    I have a couple of apps installed & working & would like to be sure their settings are not lost in making these changes.

    I would like very much to perform this hack and must admit that I am a bit frightened by it...

    I have read all the pages of this thread and collected the entries which seem pertinent & important to doing this process to my phone, I will include them here to make this a bit easier (if possible) and my queries follow the entries separated by asterisks below - I hope someone will help me through this, please:

    ********************
    Quote
    It's really pretty simple.
    You're using ADB to shell into the phone.
    It then uses the fdisk command to delete, and then recreate the last 4 memory partitions -  basically swapping

    the 'internal memory' partition with the 'system memory' partition.
    *********************************

    After the hack, you'll have around 1gb for app installs, and ~160mb for internal memory. (browsers like to cache

    here... a few other things).

    **********************************
    Here you go:

    Make sure your 'internal memory' partition is pretty clean. We're going to shrink it from 1gb to around 160mb.

    Anything in bold, is something you type.

    1) Root the phone and install CWM from the one click update in these forums

    2)  Did you complete step #1? DON'T go any further until you do. Clockwork mod is not optional! Use clockwork
    mod to make a full backup of your phone. You can store it on the 4gb chip that comes with the phone. The
    backup is fairly small.

    3) adb reboot recovery

    4) after the reboot...
    adb shell
    cat /proc/partitions
    The last 4 lines for mmcblk0 must look like this. If they do not, then DON'T continue if you're blindly following steps.
    For example, if you don't have a p23, or have a p24 0 - don't continue.
     179       20    1048576 mmcblk0p20
     179       21     163840 mmcblk0p21
     179       22      16384 mmcblk0p22
     179       23       4096 mmcblk0p23

    #delete the last 4 partitions on the internal memory nand chip
    5) fdisk /dev/block/mmcblk0
    print all
    d (after pressing return, it will ask for a number)
     20
    d
     20
    d
     20
    d
     20
    w

    6) adb reboot recovery

    #create new partitions with the space layout we want
    7) after the reboot...
    adb shell
    print all  - you should only see 19 partitions returned! If you still see 23, you didn't complete step #5 correctly, or possibly your phone isn't rooted.
    fdisk /dev/block/mmcblk0
    n (after pressing return, it will ask for a number. Press return after the 1st number and it will ask for a 2nd number)
    84482
     105731
    n
    105733
    236030
    n
    236032
    238079
    n
    238081
    238592
    w

    #not even sure if this is necessary...
    8  adb shell
    mke2fs -t ext4 /dev/block/mmcblk0p21
    mke2fs -t ext4 /dev/block/mmcblk0p22
    mke2fs -t fat32 /dev/block/mmcblk0p20

    9) adb reboot recovery

    10) full nandroid restore. Reboot, and you're done. 1gb of usuable space for app storage. "internal memory" for pictures, etc is around 160mb.

    ********************************************************
    There were a few things I noticed along the way that weren't in the guide, and I'd like to point those out here:

    I was able to do the partitioning just fine with the rooting/cwm tools and AreaRom Dynamic from this site.
    I'm not sure what the confusion or issues are, but just in case this is it - make sure you're not closing the command prompt during this process. Technically you *can*, but you'll lose track of the 'logs' that leaving it open would provide. If I remember correctly the 'fdisk' command would be entered while still in shell mode.

    Step 4:
    There is in fact an extra line after "179       23       4096 mmcblk0p23", which was something similar to "179       
    32       4096 mmcblk0p32"

    Step 5:
    After entering "w", you have to Ctrl+C to get out of shell then enter "adb reboot recovery".
    If I remember correctly there was also a notification similar to "disk tables not the same, device is busy" something something. It actually freaked me out, but I decided to continue anyway. Note that another Ctrl+C was needed here as well since we're still in shell.

    Step 7:
    Basically the same as Step 5. Required another Ctrl+C to exit shell.

    Step 8:
    Another Ctrl+C to exit shell.

    Step 10:
    While in Recovery, I followed that same steps as if I were going to install a new ROM or restore a backup.
    Wipe data/factory restore
    Wipe cache
    Mounts and Storage > Format everything except SDCard
    Advanced > Wipe Dalvik Cache

    Backup and Restore > Restore > AreaRomV1.0-Default  (that's what I named my default ROM backup. Yours may be a date/time format).

    ======

    Immediately after following this guide I went into Settings > Applications > Manage Applications.
    The free memory was as follows:

    System Memory = 0.90GB free (77MB used)
    Internal Memory = 166MB free (208KB used)

    ********************************************************
    A couple of notes from when I did the procedure.

    On Step 7

    7) after the reboot...
    adb shell
    print all did nothing, I think it was supposed to be >> cat /proc/partitions- you should only see 19 partitions returned! If you still see 23, you didn't complete step #5 correctly, or possibly your phone isn't rooted.
    fdisk /dev/block/mmcblk0


    Step 8, I Just got error messages here, but the OP said he was not sure these were needed, so I just skipped to Step 9, then rebooted and did the restore, and it worked. :)

    My System partition wound up being 1002 MB, and Internal memory is 166 MB, and everything works.
    **************************************
    1.
    Based upon all the above - to start with - I do not yet know how to boot this phone into recovery and presume I must be able to do this - please tell me how to find info for entering recovery, backing up, and restoring via CWM for this phone ??

    2.
    When I make a backup will it preserve & restore all my settings & apps so that afterwards the phone will be like it was - but only have more space available ??

    Thanks for any help & pointers !!
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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #63 on: June 04, 2014, 01:18:19 PM »
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  • faheyd

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    I'm not an android programmer. But I have this question to ask. Can this be incorporated into one of the roms to be flashed onto the phone. The phone is unusable in stock state or even modded. As soon as you add any apps, memory gets full and the phone sucks.
    Can a rom be modified to have those partitions listed here, be included in the modified rom?
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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #64 on: June 04, 2014, 02:15:48 PM »
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  • smallhagrid

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    The LGL38C is actually a very good little phone EXCEPT that Tracfone cripples it intentionally.

    That being said - it is a shame that this subject area seems to have gone dead as this model is still offered for sale and it is a very good value.

    Given that I am the OP for this thread - and asked for help with this subject- and got NONE - I am very saddened.

    I worked my own ways through the various posts here and now have LOADS of space in my LGL38C.

    Additional info I can share about this=>

    1.
    Connected via USB BEFORE making changes, I used Drive Snapshot to make an image of the SD card so as to preserve the files in a compressed state.
    2.
    I used Minitool Partition Wizard with the SD card in an SDHC reader for re-partitioning, and through trial-and-error discovered my phone would ONLY work with Link2SD if I made the 1st part. FAT32 & the 2nd part. FAT16.
    3.
    I restored all the files to the (now smaller) FAT32 partition by using Drive Snapshot's wonderful ability to mount an image as a drive and simply copied the files back in exactly as they were before.

    The above, done VERY carefully, took quite a while to discover what it really took to get it done - but now that it is done I have a phone with loads of good space for everything I may need.
    (Hint: ALL the additions made by other user's replies needed to be carefully integrated with the originally posted info to make it work properly...)

    The most difficult parts for me have been:
    1.
    Finding CONSISTENT info on operating the phone through recovery for backup;

    2.
    Finding solutions for the KNOWN issue with the totally botched slide-to-answer stupidity that barely ever allows any calls to be answered at all.

    I have loads of info now and will be happy to share if anyone is new to this model and needs what I've collected - it is all in the form of collected links, notes and PDF files so PM me if this appeals to you.

    A closing note:
    Compared with the Tracfone LG840G, the LGL38C is WONDERFUL just as it arrives !!!
    To see a really horribly crippled phone just find some poor soul suffering with an 840G and you'll be shocked & amazed at how crippled Tracfone can make Android into.
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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #65 on: June 05, 2014, 02:04:48 AM »
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  • vampirefo

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    Very interesting thread, I just got this phone today, yes data is way too small, I use another method to increase data and system, I run them from sdcard, that way I can make each as big as I want. Your method is different and interesting, I will look at it more tomorrow.

    data is around 3.6GB
    system about 1GB

    This gives me plenty of room to install apps, and other system files if I want.

    Below is my current setup.

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    busybox df -h
    Filesystem                Size      Used Available Use% Mounted on
    tmpfs                   150.7M     40.0K    150.6M   0% /dev
    tmpfs                   150.7M         0    150.7M   0% /mnt/asec
    tmpfs                   150.7M         0    150.7M   0% /mnt/obb
    tmpfs                   150.7M         0    150.7M   0% /mnt/extasec
    tmpfs                   150.7M         0    150.7M   0% /mnt/extobb
    /dev/block/mmcblk1p2    990.2M    274.3M    715.9M  28% /system
    /dev/block/mmcblk1p3      3.6G    357.5M      3.0G  10% /data
    /dev/block/mmcblk0p15
                              7.9M      4.3M      3.6M  54% /persist
    /dev/block/mmcblk0p16
                             70.9M     21.5M     49.4M  30% /cache
    /dev/block/mmcblk0p18
                              7.9M      4.1M      3.8M  52% /drm
    /dev/block/mmcblk0p22
                             15.7M      4.0M     11.7M  26% /mpt
    /dev/block/vold/179:20
                           1023.7M    601.2M    422.5M  59% /mnt/sdcard
    /dev/block/vold/179:20
                           1023.7M    601.2M    422.5M  59% /mnt/secure/asec
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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #66 on: June 05, 2014, 09:29:07 AM »
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  • paul1947

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    Hello Vampirefo

            Could you elaborate and give info on how you run from the sdcard? I would be thankful and appreciate
    it.
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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #67 on: June 05, 2014, 09:44:38 PM »
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  • vampirefo

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    I will try and write a guide when I have time, my method is a bit more complicated then the one in this thread.

    I have a few guides up on different devices, all are about the same a few changes for each device.

    Right now I am downloading kernel source as I want to use swap file, and stock kernel has swap disabled, so I have to compile a kernel just to get swap to work.

    These are my guides for other devices, if you want to look at them.

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    You are not allowed to view links. Register or Login

    Update well that was quick, kernel compiled without issues, I now have swap.

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    adb shell
    # busybox free -m
                 total         used         free       shared      buffers
    Mem:           301          297            3            0            1
    -/+ buffers:                296            5
    Swap:          399            8          391
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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #68 on: June 06, 2014, 01:03:46 AM »
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  • crazyoldbagz

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    Please do! This would be an EXCELLENT addition to the community for this phone. :)
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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #69 on: June 13, 2014, 07:08:50 PM »
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  • itssofluffy

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    Has any one had any luck with an app such as this:
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    It seems to have gotten good reviews from "this model only" in the android market so I would assume its functional...
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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #70 on: June 20, 2014, 10:22:26 PM »
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  • rpqhd3

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    Just want to say thank you to all who have worked on this and posted their suggestions and findings.  Repartitioning was a piece of cake, thanks to your work.

    Would it be reasonable to make use of the last few cylinders by moving p22 further toward the end of storage and simply not setting up p23?


    Sent from my BN Nook HD using Tapatalk


    Re: Hacking the LGL38C - More app install space - How to

    « Reply #71 on: June 22, 2014, 11:05:56 PM »
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  • boegarj

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    Im having difficulty doing this operation. I really need the extra space. I wish there was a one click for this, cant seem to get my ADB working correctly.
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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #72 on: June 23, 2014, 04:10:01 PM »
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  • itssofluffy

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    You are not allowed to view links. Register or Login
    If your memory sizes are correct, System Memory 1002 MB, and Internal Memory 166MB, then there should be no need to do the procedure again. What you might want to do is go into recovery and do a Factory Restore, then after you go through the steps to setup the phone, do a backup, then go into recovery and install the Arearom.

    My phone is also very very slow after partitioning, After I clear some temporary files in the internal memory it speeds back up but then slows down again after some use. I tried following this process but Im a little confused. Could someone clarify andynewbys steps?
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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #73 on: June 24, 2014, 04:30:19 AM »
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  • boegarj

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    Figured out ADB and this guide. Now running area rom and my new space hack.. w00t thanks !
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    Re: Hacking the LGL38C - More app install space - How to

    « Reply #74 on: July 17, 2014, 06:59:33 AM »
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  • Guy

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    Wow this changes everything with this phone!  ;D ;D ;D ;D ;D

    I followed the instructions and it worked exactly as described. Tons or memory for apps now. Thank you!
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