Develop Bugs

[Q] ext4 What is it?!

I have been using a custom ROM for a while now and I have been seeing in the thread that many people are using ext4.
I have asked many times in the thread and recieved no reply.
So my question to you is what is "ext4" and what bennifit will it be to me as a Desire owner.
Thanks
wh000sher

1. Google is your friend
EXT4 is a file format used by Linux (Android = Linux). When threads talk about EXT4, they are referring to creating an EXT4 partition on your SD-Card e.g. have 14GB FAT32 and 1GB EXT4 (from 16GB SD-Card.. 1GB is always non-existent)
What having an EXT4 partition enables you to do, is to have Apps/Data2EXT scripts which move apps to the EXT partition, giving you a lot more internal space.

bortak said:
1. Google is your friend
EXT4 is a file format used by Linux (Android = Linux). When threads talk about EXT4, they are referring to creating an EXT4 partition on your SD-Card e.g. have 14GB FAT32 and 1GB EXT4 (from 16GB SD-Card.. 1GB is always non-existent)
What having an EXT4 partition enables you to do, is to have Apps/Data2EXT scripts which move apps to the EXT partition, giving you a lot more internal space.
Click to expand...
Click to collapse
I smell a follow up question lurking...
via xda app

stankyou said:
I smell a follow up question lurking...
via xda app
Click to expand...
Click to collapse
How do I make EXT4 -__-

Which Ext4 is the best for me?

777ace said:
Which Ext4 is the best for me?
Click to expand...
Click to collapse
For a second there, I thought you were serious. Almost had me bro, almost had me.

bortak said:
For a second there, I thought you were serious. Almost had me bro, almost had me.
Click to expand...
Click to collapse
Hahaha
Sent from my HTC Desire using xda premium

bortak said:
1. Google is your friend
EXT4 is a file format used by Linux (Android = Linux). When threads talk about EXT4, they are referring to creating an EXT4 partition on your SD-Card e.g. have 14GB FAT32 and 1GB EXT4 (from 16GB SD-Card.. 1GB is always non-existent)
What having an EXT4 partition enables you to do, is to have Apps/Data2EXT scripts which move apps to the EXT partition, giving you a lot more internal space.
Click to expand...
Click to collapse
Ah okay and can't I Do that already with the built in app moving??
I know how to make the ext4 but didn't know why I would want to?

Wh000sher said:
Ah okay and can't I Do that already with the built in app moving??
I know how to make the ext4 but didn't know why I would want to?
Click to expand...
Click to collapse
Moving some of the app data to the sd-card is different to having an EXT partition and A2SD.
If you activate A2SD, the system will install and store your apps on the EXT partition, and your internal memory will not be filled up, and will remain at xxxMB. Furthermore, with an EXT partition you can use D2EXT, which makes your phone use the EXT partition as the data partition, so if you have 1GB EXT4, your phone will see 1GB memory.
If you use the inbuilt "move to sdcard" function, it only moves some of the sd-card to the android-secure folder on your sd-card, however your internal memory is still used up.

In addition, moving apps to sd-ext partition doesn't break app widgets like the stock app2sd method that Gingerbread use.

stankyou said:
In addition, moving apps to sd-ext partition doesn't break app widgets like the stock app2sd method that Gingerbread use.
Click to expand...
Click to collapse
Reason: With A2SD / DATA2SD / etc. Android still "thinks and tells" the Apps are still installed in the internal memory (at least this tells me my logic).

MatDrOiD said:
Reason: With A2SD / DATA2SD / etc. Android still "thinks and tells" the Apps are still installed in the internal memory (at least this tells me my logic).
Click to expand...
Click to collapse
That's how I see it as well. And makes apps available to use when you have it on usb transfer mode.
via xda app

MatDrOiD said:
Reason: With A2SD / DATA2SD / etc. Android still "thinks and tells" the Apps are still installed in the internal memory (at least this tells me my logic).
Click to expand...
Click to collapse
MatDrOid, since you are also on MW. How do I make use of my ext4 partition I created?
I am guessing there is a way to just move to the ext4 via a app?

Wh000sher said:
MatDrOid, since you are also on MW. How do I make use of my ext4 partition I created?
I am guessing there is a way to just move to the ext4 via a app?
Click to expand...
Click to collapse
if it's MW based on oxygen, instructions on how to enable ext4 partition are in the first post, no need to use an app.

No it's the cm version using s2e and I think it's working lol
Sent from my HTC Desire using xda premium

ext4 creation
neither easeus or minitool has an option to create ext4. how do i create the ext4? and i'm going to be dual booting wp7, so should it look like this:
ext4
fat32
wp7 partition
or like this:
fat32
ext4
wp7 partition
??? plz help

noobinius said:
neither easeus or minitool has an option to create ext4. how do i create the ext4? and i'm going to be dual booting wp7, so should it look like this:
ext4
fat32
wp7 partition
or like this:
fat32
ext4
wp7 partition
??? plz help
Click to expand...
Click to collapse
backup your sd card 1st
then use only 4ext recovery (requires s-off to change recovery) or gparted to create your partition (step 5 here)

sorry if i bump old post
Can i access my internal memory once i use Ext4?

nestleomega said:
sorry if i bump old post
Can i access my internal memory once i use Ext4?
Click to expand...
Click to collapse
With a root file explorer.

[Q] s2e cant find my sd-ext partition

i formatted my sdcard then i made and sd-ext partition trough cwm 5.0.2.6
and s2e cant seem to find it.

cwm creates a corrupted ext-sd partition, if you are on windows use the minitool partition wizard, or if you're in linux, and already have the corrupted partition use gparted to fix the errors, or create the partition again.

Had told you already.
Dont create the same threads when it is answered
http://forum.xda-developers.com/showthread.php?t=1738961
Sent from my GT-S5660 using xda premium

jqmmes said:
cwm creates a corrupted ext-sd partition, if you are on windows use the minitool partition wizard, or if you're in linux, and already have the corrupted partition use gparted to fix the errors, or create the partition again.
Click to expand...
Click to collapse
using px-recovery 0.3.6....
formatted my ext4 partition using that and its now the only time that my s2e sd-ext doesn't corrupt.
it corrupted even when my ext4 was formatted using minitool...

bdasmith said:
using px-recovery 0.3.6....
formatted my ext4 partition using that and its now the only time that my s2e sd-ext doesn't corrupt.
it corrupted even when my ext4 was formatted using minitool...
Click to expand...
Click to collapse
Px is based on CWM. Do U use CM9?

no...cm7.2

Well, everytime cwm formated the ext4 ext-sd it was corrupted for me... And I used gparted to fix it... When I used minitool to create the partition it also worked well.... Did you activate the ext4 setting in s2e?

Install a SD card/disk tool, s2e uses FreeSpace. It will display if your partion is well formatted or not. Also you can try mounting sd-ext in recovery, if it doesn't mount, it's corrupted. But the best solution is of course using Partition Mini.

Links2SD with Linux

Hey,
I am using Linux as my primary OS (Arch Linux). I don't have Links2SD installed at the moment, but I'm thinking of installing it. Since I use Linux as my OS anyway, is it necessary to have a FAT partition? Can I just format the whole sdcard to ext3 or ext4?
--czardoz

czardoz said:
Hey,
I am using Linux as my primary OS (Arch Linux). I don't have Links2SD installed at the moment, but I'm thinking of installing it. Since I use Linux as my OS anyway, is it necessary to have a FAT partition? Can I just format the whole sdcard to ext3 or ext4?
--czardoz
Click to expand...
Click to collapse
Why would you format whole memory card as Ext4? BTW Link2sd won't work well if you have partition of more than 2 GB.

sukhjit321 said:
Why would you format whole memory card as Ext4? BTW Link2sd won't work well if you have partition of more than 2 GB.
Click to expand...
Click to collapse
So that I will have The whole of my sdcard as internal memory. I basically don't need FAT/NTFS because I don't use Windows. My OS (Arch Linux) can read ext* filesystems too. In fact, all drives on my PC are ext4.

czardoz said:
So that I will have The whole of my sdcard as internal memory. I basically don't need FAT/NTFS because I don't use Windows. My OS (Arch Linux) can read ext* filesystems too. In fact, all drives on my PC are ext4.
Click to expand...
Click to collapse
the only problem that I could imagine is that link2sd expects the ext-partition to be the second on the sd-card. but I don't know how link2sd works. I did it manually and just linked /data/app and /data/dalvik-cache to the ext-partition on the sd-card. another good reason to use 2 partitions might be the fact - if I'm not completely wrong - that the first partition is unmounted if you connect it to the pc and activate file transfer mode. if you linked whole /data to this first partition you might run into problems.

You'll still need a fat partition. Or at least two partitions, one for files and one for link2sd.
Sent from my HTC Wildfire S with Beats Audio using xda premium

benjamingwynn said:
You'll still need a fat partition. Or at least two partitions, one for files and one for link2sd.
Sent from my HTC Wildfire S with Beats Audio using xda premium
Click to expand...
Click to collapse
You mean if I put music in my Link2sd partition, it wont be playable?

Android and ext4
I'm not sure Android can read music files on ext4.

[Q] About Ext partition from CWM

Hi, I have bought a 4gb SD Card, and made Ext partition from CWM 5.0.2.6.
Anyone can tell me what ext partition I have made: ext2/ext3/ext4? How i can upgrade to higher ext partition?
Sorry for my bad English
Thx for reply

I think you shoud use pc and partition managers to know that and upgrade.
Sent from my GT-S5660 using Tapatalk 2

I think you've made a EXT2 partition, CWM only goes up to EXT2
If you're using a Windows PC, you can download and use a tool called MiniTool® Partition Wizard (Home)
Delete the EXT2 partition on your SDCARD and make (move/resize) a new EXT4 Primary partition with a cluster size of 4KB
Hit Apply on the Top-Left corner

baterfly777 said:
I think you shoud use pc and partition managers to know that and upgrade.
Sent from my GT-S5660 using Tapatalk 2
Click to expand...
Click to collapse
Thx
Peteragent5 said:
I think you've made a EXT2 partition, CWM only goes up to EXT2
If you're using a Windows PC, you can download and use a tool called MiniTool® Partition Wizard (Home)
Delete the EXT2 partition on your SDCARD and make (move/resize) a new EXT4 Primary partition with a cluster size of 4KB
Hit Apply on the Top-Left corner
Click to expand...
Click to collapse
Thx but I must use card reader?

multifearz261 said:
Thx but I must use card reader?
Click to expand...
Click to collapse
Yes. You must.

i have tried with MiniTool Partition but after make ext4, partition force back to ext2 and linux swap?
_______________
I tried with another SD card, after make ext partition, there no ext4 partition apear on MiniTool Partition Wizard Home Edition
Click to expand...
Click to collapse
Solved

[4.3] Can't mount external partition with Link2SD on rooted Xperia M

Hi all,
I have a sony Xperia M (C1905). Till some days ago I have the old android release with rooted access and link2sd. All worked good.
With the last 4.3 update I had some problems, since I'm not an expert android developer . However I managed to root my phone using the haresh311999 guide.
I have my phone rooted, checked also with Root checker. I've also SuperSu, BusyBox and Link2Sd app. I've enabled the debug mode and checked the MSC storage mode.
But in Link2sd I cannot mount my external partition in which I used to link all the bigger apps. I've an ext3 partition and before the 4.3 upgrade it worked good. Now If I try to rebuild the script I got an error:
Mounting script cannot be created (This string isn't the original one, since I'm not english).
"mount: Operation not supported on transport endpoint"
Click to expand...
Click to collapse
I've found in the forum that I should try this procedure but with adb I can't run adb mount or adb root:
adbd can't run as root in production builds
Click to expand...
Click to collapse
I've tried also with adb shell and su command, to mount system as r/w but till now I haven't succeded....
$ adb shell
$ su
# mount -o rw,remount /system
Click to expand...
Click to collapse
Any suggestion ?

You can try to set second partition with FAT32,,
My partition workin' perfect,,
Sent from my C1905 using XDA Premium 4 mobile app

Also my ext3 was working good.
I don't want to lose all the data in the partition...
If there are some fixes I prefer to try before format it... Now I just had an idea: I can try to do another partition with the minitool and try if there is only a filesystem problem...

must be ext4 on my working fine and fast

and i got bootloop :/

Root device clean partition and create new and mount script should be ok
Wysyłane z mojego C1905 za pomocą Tapatalk 2

orion_42 said:
Hi all,
I have a sony Xperia M (C1905). Till some days ago I have the old android release with rooted access and link2sd. All worked good.
With the last 4.3 update I had some problems, since I'm not an expert android developer . However I managed to root my phone using the haresh311999 guide.
I have my phone rooted, checked also with Root checker. I've also SuperSu, BusyBox and Link2Sd app. I've enabled the debug mode and checked the MSC storage mode.
But in Link2sd I cannot mount my external partition in which I used to link all the bigger apps. I've an ext3 partition and before the 4.3 upgrade it worked good. Now If I try to rebuild the script I got an error:
I've found in the forum that I should try this procedure but with adb I can't run adb mount or adb root:
I've tried also with adb shell and su command, to mount system as r/w but till now I haven't succeded....
Any suggestion ?
Click to expand...
Click to collapse
echo juned said:
You can try to set second partition with FAT32,,
My partition workin' perfect,,
Sent from my C1905 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
orion_42 said:
Also my ext3 was working good.
I don't want to lose all the data in the partition...
If there are some fixes I prefer to try before format it... Now I just had an idea: I can try to do another partition with the minitool and try if there is only a filesystem problem...
Click to expand...
Click to collapse
darekesp said:
must be ext4 on my working fine and fast
Click to expand...
Click to collapse
n00BXperia said:
and i got bootloop :/
Click to expand...
Click to collapse
darekesp said:
Root device clean partition and create new and mount script should be ok
Wysyłane z mojego C1905 za pomocą Tapatalk 2
Click to expand...
Click to collapse
Well, I am sure you must be using Link2Sd to mount games/applications on your Xperia.
Mind if I suggest that you can use FOLDER MOUNT
FOLDER MOUNT LINK
This is amazing little software which requires root but it doesnot do anything more than telling games where to find the OBB files.
In free version, you can mount upto 3 games where as in full version, you can use unlimited mounts!
Check it out and you wouldnot use Link2SD any more

orion_42 said:
Also my ext3 was working good.
I don't want to lose all the data in the partition...
If there are some fixes I prefer to try before format it....
Click to expand...
Click to collapse
Same problem on a different device... solution: in Link2SD, choose EXT4 (even if the 2rd partition is actually EXT2/3).
This worked for me, and I didn't lose any data in the EXT2 partition. No reformatting needed.

dangerzone said:
Same problem on a different device... solution: in Link2SD, choose EXT4 (even if the 2rd partition is actually EXT2/3).
This worked for me, and I didn't lose any data in the EXT2 partition. No reformatting needed.
Click to expand...
Click to collapse
Worked for me as well on Samsung Xcover2 GT-7710

br0ziliy said:
Worked for me as well on Samsung Xcover2 GT-7710
Click to expand...
Click to collapse
Had the same error, choose ext4 as the partition type and it created the script and asked me to reboot my phone just like it used to on all my other devices.

orion_42 said:
Also my ext3 was working good.
I don't want to lose all the data in the partition...
If there are some fixes I prefer to try before format it... Now I just had an idea: I can try to do another partition with the minitool and try if there is only a filesystem problem...
Click to expand...
Click to collapse
darekesp said:
must be ext4 on my working fine and fast
Click to expand...
Click to collapse
I couldn't believe that.
Will ext partitions work on our XM?
I had tried many times.
boot loop was the result :crying:
I had formatted all types of ext versions. no hope.
Now I am using Memory Swap (JB 4.3)
but still I want Link2SD to be worked.
I have Link2SD Pro App.
Will Link2SD work with swapping?
Now I have been using "nicky root" for rooting, since its a "full root" method.
I have a reserve of 5GB for second partition; not formatted.
Please guide me......

I have a LG L65, had the same problem, but could fix it
Hi, guys.
I have a LG L65 running Android 4.4.2 KitKat. I had the same problem. My phone was rooted (using towelroot), my SD Card was partitioned, but couldn't get the mount script. I tried what some of you said about creating an ext2 partition and choosing ext4 on Link2SD, and it worked.
Also, don't know if it matters or not, but I'll say it anyway; I was using FAT for my data partition, but switched to FAT32.

Great, ext4 did the trick. Thank you very much!

Sony E1 D2004 (4.4.2) fixed
dangerzone said:
Same problem on a different device... solution: in Link2SD, choose EXT4 (even if the 2rd partition is actually EXT2/3).
This worked for me, and I didn't lose any data in the EXT2 partition. No reformatting needed.
Click to expand...
Click to collapse
*******
Also worked on my Sony E1 D2004 (4.4.2). Thanx, dangerzone!:good:
Who'd have thunk that 4 means 2? !!!
Rob

dangerzone said:
Same problem on a different device... solution: in Link2SD, choose EXT4 (even if the 2rd partition is actually EXT2/3).
This worked for me, and I didn't lose any data in the EXT2 partition. No reformatting needed.
Click to expand...
Click to collapse
Thanks. Worked for me too..

Bootloop?
I did the ext4 option trick, but somehow now it just turns off suddenly after that and keeps looping at the boot until I remove the SD Card. Any tips?
PS: I also re-formatted the SD Card over to the ext4 format, and that didn't work either.

dangerzone said:
Same problem on a different device... solution: in Link2SD, choose EXT4 (even if the 2rd partition is actually EXT2/3).
This worked for me, and I didn't lose any data in the EXT2 partition. No reformatting needed.
Click to expand...
Click to collapse
Confirmed - 4 does in fact equal 2. Worked fine.

choosing ex4 partition is the solution
i choosed ex4 partition and the problem solved
thank you very much
LG L70
:laugh::laugh::laugh::good::good:

Not working for me in any way. I have the second partition formated ext3, and Link2Sd says the following for each format:
mount script cannot be created...
ext3
mount: operation not supported on transport end point
ext4
mount: invalid argument
ext2
mount: no such device
... ?... WTH is going on?
Sent from my LG-D855 using XDA Free mobile app

CNK80Q3MX said:
Not working for me in any way. I have the second partition formated ext3, and Link2Sd says the following for each format:
mount script cannot be created...
ext3
mount: operation not supported on transport end point
ext4
mount: invalid argument
ext2
mount: no such device
... ?... WTH is going on?
Sent from my LG-D855 using XDA Free mobile app
Click to expand...
Click to collapse
are your kernel support move app to sd feature?