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I managed to change the size of my partitions today by quite a simple hack, and thought it might be useful to others.
I guess it opens up a lot of possibilities for those who can be bothered with it.
All data will be lost doing this.
The partitions I have modified successfully are:
/data: Increased to2GB (broke clockworkmod) 1.85GB Useful if you can't be arsed with A2SD.
/system: Increased to half a gig. Useful if you want a big OS, I just did it to see if I can!
/cache: Big increase to a gig! (probably overkill, but I then modified build.prop in CM7 to put the dalvik-cache there!) I know my cache will always have MORE than enough space and I could download as big as APK ever from the market!
/(recovery partition): Increased from 20mb to 50mb. Again, just to see if I can. Would give the possibility of a bigger recovery with more options I suppose.
As a result, my internal memory card is now only 3.88 GB. Hence I would recommend this mod with Cyanogenmod that uses your external SD card as primary rather than stock, that uses the internal card as primary (/sdcard).
Now the important bit:
I have only done this ONCE and it worked. I do not know if or not it will work for YOU. If you brick your phone, then I am sorry however you have been warned!
I do however think if it all goes wrong, you can get your phone working using NVFlash with a default config. I have not tried and I am not sure!
The Guide
Sort out NVFlash
You need to download NVFlash from here: http://android.modac...66062-15032011/
And then follow instructions from here: http://android.modac...s-links-active/
Read the instructions, install the drivers. Test using "nvflash --sync" but do not run flash.bat yet!
Right now you should have NVFlash, the APX-Mode driver installed and "nvflash --sync" has given a promising output.
IF you have having trouble with NVFlash, use a proper LG cable. The cheap Chinese ones are CRAP. Mine was not supplying enough power and causing NVFlash to drop out at random points with all sorts of weird and wonderful messages. Use the cable that came with your phone!
Configure NVFlash
Make a backup of android_fastboot_emmc_full.cfg. This is your "stock" layout. After backing up, open in Notepad++ or similar Linux-Friendly text editor (NOT windows Notepad!)
This is your partition layout. Partitions of interest are:
ID - 6, Name: APP, this is /system
ID - 7, Name: CAC, this is /cache
ID - 14, Name: SOS, this is Recovery
ID - 16, Name: UDA, this is /data
ID - 18, Name: UDB, this is Internal SD
Basically, you just need to change the size to suit your needs. The size are in bytes. Make sure you follow the notes:
1. I read somewhere these must be multiples of 2048. I would use nice round figures such as 2 gigabytes (size=2147483648)
2. UDB has size: size=0xFFFFFFFFFFFFFFFF I guess this means "all of the rest".
3. I would not remove UDB COMPLETELY!
4. Make sure you don't over allocate. Im sure I dont need to say it but you can't have a 20gb /data
Applying the update
Run "flash.bat". You will loose EVERYTHING. After this is complete I just SuperOneClicked, got ClockworkMod installed, got the Baseband installed and flashed back to CM7. Job done.
Update / Related Stuff
Could use being in Post 2 really but anyway...
Sample Partition Sizes
Currently I am using:
/system (512 MB): size=536870912
/cache (1 GB): size=1073741824
/data (about 1.85 GB): size=1986420736
Recovery (50 MB): size=52428800
/cache is 60mb Stock. Unless you are going to hack CM to dump its dalvik-cache (covered here: http://android.modac...r-dalvik-cache/) on the Cache partition, you won't need it too big. Suggested Sizes:
128MB: size=134217728
256MB: size=268435456
512MB: See Above
1 GB: See Above
/system you might as well leave stock or change to half a gig (see above). Not sure there is a point increasing past this unless you want to push a lot of apps using ADB. I guess it has the same restriction as /data, so can't be much more than 1.75.
/data is 1.5GB stock. Suggested values:
1.75GB: 1879048192
~1.80GB: size=1932734464
~1.85GB: size=1986420736
(Not sure if the limit is 2GB or 2000000000 bytes so this one is really experimental)
~1.99GB: size=2136745984
ClockworkMod
If you want NVFlash to automatically put ClockworkMod on your recovery section rather than stock, then do this before flashing:
- Backup your old recovery.img file.
- Download: http://download.cloc....0.2.0-p990.img
- Rename to recovery.img and put in nvflash folder.
CyanogenMod: Putting the dalvik-cache for System apps on /cache instead of /data
Link: http://android.modac...r-dalvik-cache/
I guess it opens up a lot of possibilities for those who can be bothered with it.
All data will be lost doing this.
The partitions I have modified successfully are:
/data: Increased to
/system: Increased to half a gig. Useful if you want a big OS, I just did it to see if I can!
/cache: Big increase to a gig! (probably overkill, but I then modified build.prop in CM7 to put the dalvik-cache there!) I know my cache will always have MORE than enough space and I could download as big as APK ever from the market!
/(recovery partition): Increased from 20mb to 50mb. Again, just to see if I can. Would give the possibility of a bigger recovery with more options I suppose.
As a result, my internal memory card is now only 3.88 GB. Hence I would recommend this mod with Cyanogenmod that uses your external SD card as primary rather than stock, that uses the internal card as primary (/sdcard).
Now the important bit:
I have only done this ONCE and it worked. I do not know if or not it will work for YOU. If you brick your phone, then I am sorry however you have been warned!
I do however think if it all goes wrong, you can get your phone working using NVFlash with a default config. I have not tried and I am not sure!
The Guide
Sort out NVFlash
You need to download NVFlash from here: http://android.modac...66062-15032011/
And then follow instructions from here: http://android.modac...s-links-active/
Read the instructions, install the drivers. Test using "nvflash --sync" but do not run flash.bat yet!
Right now you should have NVFlash, the APX-Mode driver installed and "nvflash --sync" has given a promising output.
IF you have having trouble with NVFlash, use a proper LG cable. The cheap Chinese ones are CRAP. Mine was not supplying enough power and causing NVFlash to drop out at random points with all sorts of weird and wonderful messages. Use the cable that came with your phone!
Configure NVFlash
Make a backup of android_fastboot_emmc_full.cfg. This is your "stock" layout. After backing up, open in Notepad++ or similar Linux-Friendly text editor (NOT windows Notepad!)
This is your partition layout. Partitions of interest are:
ID - 6, Name: APP, this is /system
ID - 7, Name: CAC, this is /cache
ID - 14, Name: SOS, this is Recovery
ID - 16, Name: UDA, this is /data
ID - 18, Name: UDB, this is Internal SD
Basically, you just need to change the size to suit your needs. The size are in bytes. Make sure you follow the notes:
1. I read somewhere these must be multiples of 2048. I would use nice round figures such as 2 gigabytes (size=2147483648)
2. UDB has size: size=0xFFFFFFFFFFFFFFFF I guess this means "all of the rest".
3. I would not remove UDB COMPLETELY!
4. Make sure you don't over allocate. Im sure I dont need to say it but you can't have a 20gb /data
Applying the update
Run "flash.bat". You will loose EVERYTHING. After this is complete I just SuperOneClicked, got ClockworkMod installed, got the Baseband installed and flashed back to CM7. Job done.
Update / Related Stuff
Could use being in Post 2 really but anyway...
Sample Partition Sizes
Currently I am using:
/system (512 MB): size=536870912
/cache (1 GB): size=1073741824
/data (about 1.85 GB): size=1986420736
Recovery (50 MB): size=52428800
/cache is 60mb Stock. Unless you are going to hack CM to dump its dalvik-cache (covered here: http://android.modac...r-dalvik-cache/) on the Cache partition, you won't need it too big. Suggested Sizes:
128MB: size=134217728
256MB: size=268435456
512MB: See Above
1 GB: See Above
/system you might as well leave stock or change to half a gig (see above). Not sure there is a point increasing past this unless you want to push a lot of apps using ADB. I guess it has the same restriction as /data, so can't be much more than 1.75.
/data is 1.5GB stock. Suggested values:
1.75GB: 1879048192
~1.80GB: size=1932734464
~1.85GB: size=1986420736
(Not sure if the limit is 2GB or 2000000000 bytes so this one is really experimental)
~1.99GB: size=2136745984
ClockworkMod
If you want NVFlash to automatically put ClockworkMod on your recovery section rather than stock, then do this before flashing:
- Backup your old recovery.img file.
- Download: http://download.cloc....0.2.0-p990.img
- Rename to recovery.img and put in nvflash folder.
CyanogenMod: Putting the dalvik-cache for System apps on /cache instead of /data
Link: http://android.modac...r-dalvik-cache/
Edited by mankian, 02 November 2011 - 04:11 PM.
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