[Q] Need help with ext3 and ext4. - LG Optimus 2x

Hi i'm new here and i have some question need you guys help.
1)I'm now on stock rom and kernel with ext3 file.Do i need to do anything if i want to load new rom or kernel with ext4 from cwm 5.0.2.0?
2)If my current rom or kernel is ext4 and i want to load back to ext3,what should i do?
Sorry for my bad english.

You don't need to do anything to switch to EXT4, ROMs convert on install. Take a backup of your stock setup, you can restore that to get back to EXT3 as you're using CWM v5.

Thanks you Rusty!
So the newest cwm will automatically convert it to ext4 right?!Except for ext3,i need to convert it using backtoext3 from Paul or restore back to stock.

No.
A ROMs updater-script will convert to EXT4 if it needs it. CWM v5 will convert back to EXT3 when restoring a backup of an EXT3 ROM.

Thanks again Rusty!
I get the picture now!

Related

[MOD] Back to ext 4 / ext 3

This script will convert your system & data partition to ext 4 filesystem
only use it when your ROM / KERNEL supports ext4 filesystem ! Read description carefully !
example for use :
use it when you try out MCR ROM FR19 (you have to convert to ext3 before) or CM (will auto convert to ext3 when installing) and want to revert back to your older backup (FR18 for example)
restoring your backup in CWM recovery will restore your data but will not convert your filesystem back to ext4, that´s why i made this zip.
so, if you plan reverting to your backup (which supports ext4), simply apply this zip in recovery & restore your backup afterwards ;
back_to_ext4
------------------------------------------------------
This script will convert your system & data partition to ext 3 filesystem
(courtesy of Paul / MoDaCo)
If you have been using a EXT4 ROM and you want to restore a stock ROM that only has EXT3 support, it's a bit of a faff. Introducing BackToEXT3.
This ClockworkMod update zip simply converts your /system and /data partitions back to EXT3. It wipes them both in the process, so you need to have an existing backup / ROM to restore to.
Click to expand...
Click to collapse
example for use :
use it if you are running an ext4 ROM at the moment and want to revert to your stock ROM or CM backup. (which both only support ext3 at the moment)
r1-backtoext3-2x-unsigned
Niceee, just what a lot of people need.
How do I tell if I´m running Ext 3 or 4 ?
Filgaliel said:
How do I tell if I´m running Ext 3 or 4 ?
Click to expand...
Click to collapse
quick on phone :
open "terminal emulator" (free in market) on phone
type in command : "mount"
check output
example (sys+data : ext4) :
Anyone know if the CM7 (offical) kernel has support for EXT4? Then we could use this to convert from EXT3 to EXT4, right?
sibbor said:
Anyone know if the CM7 (offical) kernel has support for EXT4? Then we could use this to convert from EXT3 to EXT4, right?
Click to expand...
Click to collapse
you could use, but ...
CM system partition still running ext 3 ...
Code:
format("ext3", "EMMC", "/dev/block/mmcblk0p1");
mount("ext3", "EMMC", "/dev/block/mmcblk0p1", "/system");
Can we ext4 on cm7 with a custom kernel?
ermacwins said:
Can we ext4 on cm7 with a custom kernel?
Click to expand...
Click to collapse
afaik, no custom CM kernel supports ext4 atm ...
added backtoext3 script from paul in 1.st post ...
75markus said:
added backtoext3 script from paul in 1.st post ...
Click to expand...
Click to collapse
I used this backtoext3 in order to return to my nandroid stock rom v10d backup.
Restore completed, but then on boot, it stucks on the 2nd LG logo (one with blue statusbar underneath it).
Am I missing a step here?
75markus said:
afaik, no custom CM kernel supports ext4 atm ...
added backtoext3 script from paul in 1.st post ...
Click to expand...
Click to collapse
I'm working on a universalEXT4converter. It will convert your filesystem to ext4 and edit your ramdisk (works on every rom). Currently not working and I can't bugfix it (because erm something went wrong hehe ).
But will be ready soon and p999 support will follow too
viluve said:
I used this backtoext3 in order to return to my nandroid stock rom v10d backup.
Restore completed, but then on boot, it stucks on the 2nd LG logo (one with blue statusbar underneath it).
Am I missing a step here?
Click to expand...
Click to collapse
strange ...
it should work for that case ...
you have also changed baseband to newer version , perhaps that´s the reason ?
Benee said:
I'm working on a universalEXT4converter. It will convert your filesystem to ext4 and edit your ramdisk (works on every rom). Currently not working and I can't bugfix it (because erm something went wrong hehe ).
But will be ready soon and p999 support will follow too
Click to expand...
Click to collapse
sounds good
75markus said:
sounds good
Click to expand...
Click to collapse
hehe But first need to fix up my device so I can test this zip. First only data convertion. Strange stuff happend last time : /
Well I'm running the latest Slick2x-G which is CM7 and I've tried a new kernel (Morfic's EXT4 Trinity Test Kernel) from OP of this topic http://forum.xda-developers.com/showthread.php?t=1067939
Converted to EXT4 with CM7 and it seems to be running ok, not having any problems, battery life not too bad either.
One thing I was wondering though was I was to wipe and put a different CM7 based rom on without the above kernel would it automatically convert back to EXT3?
[vertigo] said:
Well I'm running the latest Slick2x-G which is CM7 and I've tried a new kernel (Morfic's EXT4 Trinity Test Kernel) from OP of this topic http://forum.xda-developers.com/showthread.php?t=1067939
Converted to EXT4 with CM7 and it seems to be running ok, not having any problems, battery life not too bad either.
One thing I was wondering though was I was to wipe and put a different CM7 based rom on without the above kernel would it automatically convert back to EXT3?
Click to expand...
Click to collapse
Cm update Script formats system ext3 when installing...
Sent from my LG-P990 using Tapatalk

Steps to move from RFS to EXT4

Hi,
need steps to change rfs to ext4? And does it require data wipe?
I am on SGS I9000 + 2.3.5 stock jvt
Regards.
No data wipe required, flash a kernel with ext4 included, boot into recovery and apply lagfix. Be sure to remove lagfix before flashing another rom in cwm.
Some kernels will require chainfires ext4 tools application.
Go to develop section and have a read up.
no data wipe but for security just make a backup coz sometime it hangs but not everytime.....just convert ur partition.
innovat0r said:
Hi,
need steps to change rfs to ext4? And does it require data wipe?
I am on SGS I9000 + 2.3.5 stock jvt
Regards.
Click to expand...
Click to collapse
Now you are on stock ROM. To convert rfs to ext4 either you have to install a kernel that support ext4 and then go to recovery and then enable lagfix. Or you can go for a custom rom. My advice is to go for custom ROM like Darky...
You can follow this site for more video guide
http://www.hdtechvideo.com

CM7, MIUI EXT3 or EXT4

I'd like to flash MIUI or CM7. Right now i'm using Gueste. Should i go back to EXT3 or just wipe everything and install MIUI or CM7. I'm a bit confused, because i searced before posting and others say that MIUI/CM7 are EXT4, others that you must flash back to EXT3. What's true?
Just install CM7
Older releases was EXT3, but since their stable build CM7 are EXT4.
No need for format.
You might need a data wipe anyway, so do a backup before installing.
You need to wipe all system for installing those ROM. And to be sure use back to ext3, it's always better to do this as ROM that run ext4 make the conversion anyway.
Hello!
As always do a backup first - SMS, contacts, calendar via MyPhoneExplorer and Apps via Titanium backup.
You can to a full wipe from cwm and then install the latest CM7-Kang - and don't forget gapps...
...afterwards you can reinstall you data and you are good to go.
CM7 support both EXT3 and EXT4 – and usually does a EXT4-conversion on the way.
I don’t see any necessity to go back to EXT3 on the way…
flash miui rom (you will find a lot of roms in dev section) or latest cm7 kang. it's your decision, both rom's are stable.
but go back to EXT3 first. that's the safe way

How to check EXT3 or EXT4 on LG O2X

How to check partition EXT3 or EXT4 on LG O2X, coz i have nandroid backup of 2.3.4 when i tried to restore on cm7 it stucks on lg logo, i used nvflash method http://forum.xda-developers.com/showthread.php?t=1007825 now im on stock 2.2 so want to sure the partition before to try nandroid restore.
I hade that once .. if u r still stuck on lg logo, then unplug battery and then plug it .. hopefully it will resolve this .. this froyo rom is EXT3 .. u have to root and install recovery first if u want to restore ..
You can try nvflash rom directly.
The official rom is ext4 format.
Stock ROM is ext 3, flash BackToExt3 from recovery and then restore.
i want to know too how to check that im on miui latest
dandeli21 said:
i want to know too how to check that im on miui latest
Click to expand...
Click to collapse
Install Android System Info from the Market. Then go to Mount Points and you'll get the FS of all the partitions. Look for /system /data and /cache.
MUI which is CM based should be EXT4. Stock LG roms are EXT3 and will be the same until they update the kernel.
Cheers!
el_charlie said:
Install Android System Info from the Market. Then go to Mount Points and you'll get the FS of all the partitions. Look for /system /data and /cache.
MUI which is CM based should be EXT4. Stock LG roms are EXT3 and will be the same until they update the kernel.
Cheers!
Click to expand...
Click to collapse
thanks for the info

EXT4

I want to flash the stock v20s rom....and iti is in ext3 format right? so my question is....Can I convert it to ext4 or the rom needs to support ext4 format?
ilooze said:
I want to flash the stock v20s rom....and iti is in ext3 format right? so my question is....Can I convert it to ext4 or the rom needs to support ext4 format?
Click to expand...
Click to collapse
The kernel needs to support ext4. The stock kernel does not, so if you want to use ext4 you also need to flash a custom kernel.

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