Database Develop

[Q] Need help with ext3 and ext4.

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!

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

Cleaning up /preload partition

I'm on stock JB.
I noticed the /preload/symlink/system/app/ is full of APKs, some of them I removed from my system partition as I don't need them.
Is it safe to remove all APKs from /preload ?
What's it used for anyway? They are not really symlinks as the path would suggest.

emwu_ said:
I'm on stock JB.
I noticed the /preload/symlink/system/app/ is full of APKs, some of them I removed from my system partition as I don't need them.
Is it safe to remove all APKs from /preload ?
What's it used for anyway? They are not really symlinks as the path would suggest.
Click to expand...
Click to collapse
You can always flash stock Firmware with Odin and get all those back. That what yuo removed from system partition was shortcuts to the apps in preload partition (not all of it, but the ones that are present in preload).

Changed /system to f2fs, cannot change back to ext4

I changed /system partition to f2fs for using temasek. Now I want to change it back to ext4. I converted all the other partitions to ext4 successfully. But when I try to change /system to ext4, it appears to go successfully. However, when I reboot, it still shows f2fs in the TWRP recovery.
I am using latest TWRP recovery (2.8.7.0_7 I believe).
Can anyone help me on this?

if u want to make sure ...just format the sys and if u see the line formatting system ex4_ then it's ext4 and if it's not then flash the latest twrp 2.8.7.0_8 and re-convert sys to ext4

Changed file system to ext4 and then wiped /system partition, now it is successful

format /cache as f2fs, went back to ext4 on system boot.

Hello guys,..
i tried to change my /cache to f2fs, via TWRP ( 3.0.4-1 ), but whenever i'm back in the system and check,
it was mounted back to ext4.
I have my /data mounted as f2fs already, so i assume my stock 4.1.3 can handle f2fs, right ?
Where did i do wrong ?