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Ext3 vs ext4

Hello to all.
I have a question:what is the differences between the two file system in object of this thread?
I read that some Roms support ext4 and now I have ext3.
I need to change this?is better for performance?
Thanks
Sent from my HTC Desire using Tapatalk

http://www.google.com/#hl=en&source=hp&q=ext3+vs+ext4&aq=0&aqi=g10&aql=&oq=ext3+vs+&gs_rfai=&fp=f4657a9573528472

I would like to know this also

Ext4 is the newer Linux file system. Much like Windows 95 moved to Fat32, Vista moved to the NT file system. Linux is now moving to version 4 of their file system. The new file system is more efficient, has journaling and is more secure. It really will not have any noticeable affect on operation.
It must be noted though that native Linux file systems are a lot faster than Fat Windows file systems, however they are not accessible when you put your SD card into a Windows computer. This is why only part of the card is partitioned to Ext3/4 along with the benefit of not having to unmount a file system with your apps on it.
Sent from my HTC Desire using XDA App

I ve read a post with a very good explanation a week ago .
I will search !
Edit : hum sorry its about a2sd+ , but a little about ext3 and ext4
http://forum.xda-developers.com/showpost.php?p=7458565&postcount=8

So it's not really important to make the upgrade to ext4 for me?it's only a problem about security and not affect the performance?
Sent from my HTC Desire using Tapatalk

i think it doesnt matter on a sd card which ext you use
sdcards are too slow

Check out this article for extensive info.
It is increased journalisation, and better handling of bigger volumes/files.

All the above is absolutely right, but totally wrong. The technical aspects are not important here. For the HTC Desire user the main difference between those filesystems is simple: stock kernel and recovery does not support ext4. That's it.
If you never plan to use stock kernel and/or recovery or skiled enough to enable ext4 support for them, then go ahead and read all those technical articles and do (or do not) change the FS type. If the words "stock kernel" and "stock recovery" mean nothing to you at the moment, you better stick to ext3.
P.S. in theory, ext4 gives you better write performance (and slightly longer SD card life) only if you frequently write the data to the ext partition. But this is not the case for A2SD partition, where the apps are installed occasionally. Unless you plan to give the Desire or the SD card to your grandchildren after many-many years.

[Q] Format /sdcard and /emmc as ext3?

Has anyone successfully reformatted either /sdcard or /sdcard/external_sd/ /emmc as ext3? I'm not talking about an Apps2SD partition, I'm talking about reformatting the whole volume as one partition, transparent to apps. I do not use Windows so I do not need interoperability, I am fine with ext filesystems.
My goal is to be able to use symlinks (not to mention a more robust filesystem) to redirect certain hard-coded items to store on a different storage volume than it defaults to, but symlinks are not permitted on vfat (FAT32) filesystems.
Thanks!

Anything that I look an answer for, is just not answered. :-(
I am looking for the same information. Wonder why the native ext file systems are not allowed, given that its a Linux kernel running.

You could format it to ext3 and see how it works. Worst case scenario is your phone will tell that sdcard to fu*k off. Given that our phones can and do read the ext format I'm sure you can do it. I'm just not sure how well it will work as far as mounting and such.
On top of that, Windows can read ext formats. You just need a program to do it. I use it all the time.

Thanks for reviving this thread. Surely there must be someone out there who has tried this, and I was hoping to hear from them before I gave it a go, but looks like I'll just have to give it a shot myself.
When I find the time to backup & wipe my sdcard to try and reformat & mount it, I'll report back here.

With my Galaxy Note N7000 I can format a USB Stick to EXT3, and the phone uses it perfectly well as USB Storage...
(rooted, w/w SpeedMod kernel)

[Q] Using Link2sd correctly

Hey People,
As the title shows I have some questions about using Link2sd correctly.
First off my phone is rooted and is using a standard VM rom with most of the bloatware already removed and apps2sd built into the rom.
I am only using a 4 gig SD card that has 2 partitions.
In Link2sd SD(/mnt/sdcard) card shows total .97GB and SD Card 2nd Part (/data/sdext2) has total 2.84GB.
I think I have them backwards, should /mnt/sdcard be the larger partition since that is the one I have access to?
And what is the difference between Linking something to the SD card and just moving it to the SD card?
From what I have gathered when something is Linked to the SD card it gets moved to the /data/sdext2.
And if you just move it to the SD card it gets moved to the /mnt/sdcard partition.
When would you choose one over the other?
Thanks

Quick study Links2SD can move any app; A2SD can only move apps written to be moved to SD [/sdcard]. I prefer to use the ext2 or ext3 [/sdext] as much as possible for apps as its a native file system [android is a linux branch after all]. The fat32 can cause longer delays at boot time imo. I believe your partition sizes to be a good choice though. Your fat32 will fill up with nandroids, downloaded roms and mods, music, documents and such before you know it
Hope that helps.
Rob
Sent from my HTC_A510c using Tapatalk 2

I think your ext partition is to big for a 4gb sdcard, you may want to reduce it to 1gb or 2gb if you have plenty of apps. Let me tell you more about this link2sd, app2sd and data2sd so that you will understand better and be able to decide which is suitable for your phone.
As mentioned above, link2sd moves apps to your ext2/ext3/ext4 partition. But not only apps or the apk's, it also moves the dalvik, cache, and library files supporting the apps. The advantage of link2sd is the freedom to choose which of those you want to move. You can easily check or uncheck this options during the linking process.
Native app2sd moves apps to the fat32 partition (/sdcard). And it only moves the apk, leaving cache, dalvik and library files in the internal memory. If you have several applications moved in this manner, a certain portion of your internal memory is still being consumed.
There's also Data2Sd, it creates a link of the entire /data folder and moves everything to the ext partition. Logically speaking, your ext partition becomes your /data partition. The original data partition now becomes a useless space. The advantage of this is the size of your internal memory, which is only limited to the size of your ext partition. But there's also a disadvantage, to use app2sd you need a fast sdcard (category 6 and above is recommended) because everything is now residing on the sdcard which is normally slower than the built-in memory and may result to lagging on some applications.

I have a new SD cart I have partition it like the 1i use know
How do I copy all of my staff from one card to another? So that link 2sd will work with no problem?
Sent from my HTC Wildfire S A510e using Tapatalk 2

anhelogr said:
I have a new SD cart I have partition it like the 1i use know
How do I copy all of my staff from one card to another? So that link 2sd will work with no problem?
Sent from my HTC Wildfire S A510e using Tapatalk 2
Click to expand...
Click to collapse
I you mean the apps linked into your old sdcard, then do this:
1. Backup all your apps using titanium backup. The backup will be stored in your /sdcard under "TitaniumBackup" folder.
2. Use a card reader to copy that folder to your new sdcard.
3. Insert your new sdcard to your phone, then download and reinstall titanium backup.
It will automatically scan for backup up files in your sdcard and will allow you to restore all your apps.

Ok thanks s I will try this
Send from my Wildfire S Rom : Wildchild Lite v1. 1

Why is link2sd not finding my ext 2 particion ?
Is this because I used cwr to particion my SD card ?
I have made a 2gb ext2 with 512 swap I have linked a lot of apps to SD card but when I get the memory status I get the SD particion not detected
What can I do? The think is that the phone works fine
Send from my Wildfire S Rom : Wildchild Lite v1. 1

2GB is probably more that you'll ever need. I've always used 1GB and it has not yet run out.
Could you clarify what you mean when you say that you have linked a lot of apps but the SD partition is not detected?
Does Link2SD say that the apps are on the sdcard or the apps are LINKED to SD?

AceRoom said:
2GB is probably more that you'll ever need. I've always used 1GB and it has not yet run out.
Could you clarify what you mean when you say that you have linked a lot of apps but the SD partition is not detected?
Does Link2SD say that the apps are on the sdcard or the apps are LINKED to SD?
Click to expand...
Click to collapse
Well the problem is this when I open the link2sd a windows pops up and tells me to choose
Ext2 ext 3 ext 4 fat 32 if I choose ext 2 it say that it can't found the ext2 and I have to do a restart then it finds the ext2 and tells me to restart again if I do not turn the phone off there is no problem but if I turn the phone off at night I have to do this again:banghead: in order for the link2sd to find the ext2 partition if I go to link2sd settings storage use the 2end partition is not available only if I do 2 restarts
Sent from my HTC Wildfire S A510e using Tapatalk 2

Did you ever use data2sd or s2e or anything else which uses the sd-ext partition? It sounds like there might be a conflict between different startup scripts.
Could you open a root explorer (Or terminal or adb) and find the init.d folder.
On my CM9, the folder is at /system/system/etc/init.d
Post here a list of all the files inside that folder.

AceRoom said:
Did you ever use data2sd or s2e or anything else which uses the sd-ext partition? It sounds like there might be a conflict between different startup scripts.
Could you open a root explorer (Or terminal or adb) and find the init.d folder.
On my CM9, the folder is at /system/system/etc/init.d
Post here a list of all the files inside that folder.
Click to expand...
Click to collapse
No I haven't use anythink
I have a new rom Installed with link2sd ready for use
I have a lot of free space the rom is what I wanted the only promplem is this :banghead:
The solution is never turn off my phone (I think this is no good for any phone )
Send using Htc Wildfire S
Rom Wildchild v1.1

anhelogr said:
No I haven't use anythink
I have a new rom Installed with link2sd ready for use
I have a lot of free space the rom is what I wanted the only promplem is this :banghead:
The solution is never turn off my phone (I think this is no good for any phone )
Send using Htc Wildfire S
Rom Wildchild v1.1
Click to expand...
Click to collapse
I've got confirmation that the Link2SD/a2sd in this ROM are working just fine. Many users have reported that; and a few users have even told me that Data2SD also works just fine (I dunno... I only use Link2SD) with the only point being that you can't delete/uninstall any of the app2sd scripts that come bundled with the ROM. If you must use Data2SD (why??) then simply install it and you're off and running. Other than that, Link2SD should work just fine (it does for me and, literally, hundreds others).
I suspect this has to do with what/how you restored from Titanium Backup... or the fact that you partitioned with CWM. No offense, but CWM's strength is in backup/recovery, not partitioning (or even partitioning WIPING, if you read a few key posts on this forum).
I suggest you format with MiniTool Partition Wizard (lots of good tutorials on XDA). I'm using ext2fs myself and it works just fine (of course, ext4fs also works... I've tried it myself).
Good luck,

Tigger31337 said:
I've got confirmation that the Link2SD/a2sd in this ROM are working just fine. Many users have reported that; and a few users have even told me that Data2SD also works just fine (I dunno... I only use Link2SD) with the only point being that you can't delete/uninstall any of the app2sd scripts that come bundled with the ROM. If you must use Data2SD (why??) then simply install it and you're off and running. Other than that, Link2SD should work just fine (it does for me and, literally, hundreds others).
I suspect this has to do with what/how you restored from Titanium Backup... or the fact that you partitioned with CWM. No offense, but CWM's strength is in backup/recovery, not partitioning (or even partitioning WIPING, if you read a few key posts on this forum).
I suggest you format with MiniTool Partition Wizard (lots of good tutorials on XDA). I'm using ext2fs myself and it works just fine (of course, ext4fs also works... I've tried it myself).
Good luck,
Click to expand...
Click to collapse
I though the same that the problem is the partition method I use I will try the mini tool
Send using Htc Wildfire S
Rom Wildchild v1.1

I found the problem I was selecting ext2 for link2sd but when I use mini tool it said ext3 so I load up again the card start link2sd ext3 reboot and vouala all ok know I really enjoy my phone
Send from my HTC Wildfire S
ROM. Wildchild. v2. 0

[Q] [Please HELP]Cannot Mount SD partition[Touchwiz 5 Nature ROM]

Hello,
I am using "Touchwiz 5 Nature UX 2.0-v1" ROM by "Cup_Cake" on my HTC Wildfire S 2012 edition. I tried many ROMs and this is the only ROM I found that works for me best, with least bugs.
I want to increase my internal memory, by mounting a partition of SD card to phone. So, what I have done -
Created 2 partitions with mini tool fat 32
Used Link2SD/App2SD to mount it.
When I open Link2SD and then select fat32/16 its says "mount script cannot be created"
Please help, I am in BIG trouble. I really need the Internal memory otherwise I can't use this phone.
Thanks

Create an EXT4 partition instead of an FAT32 one and try to mount it

[Q] Wildfire S SD partition/link2sd problems

Firstly I have read through every thread I can find with same problem but cannot solve this.
I have been partitioning a 16gb microsd card to be able to use Link2sd to move apps for more memory
The first partition is around 15gb Fat32 Primary
but it is the second partition I am having problems with ?
1gb Primary ext 2/3/4 and Fat32 I have tried them all and I still get the mount script error. In link2sd the scond partition is not mounted and does not show up at all in settings/storage or about phone/partition info
Android version 4.2.2
Kernel version 2.6.35.15-OWL-predator-v2.0 -gdb5e2e5-dirty
Cyanogen Mod CM10.1 release candidate v2.1 (owl project)
I bought this phone second hand with cyanogen mod already installed and fully rooted
Please help :fingers-crossed:

Here you go,
http://forum.xda-developers.com/showthread.php?t=2142844
Greetz,

I have managed to work my way through this thread and maybe I should try another like mount2sd first then Link2sd like Mikeyd125 posted
"For some custom roms and some phones like samsung galaxy ace plus gt-s7500. Partitioning the memory card using either the method above or using system recovery will not work as Link2sd is unable to create the mount script for the 2nd partition created.
An app from google play called Mount2SD is the solution as it has most of the mount scripts needed. However on installing it, it will uninstall link2sd.
once installed Mount2sd, install startup binaries and set the driver to EXT4.
Reboot phone.
Install Link2SD, create mount script using EXT4 and it will say ' success mount script created'
Leave Mount2SD installed as you have further functionality with it and it is required to manage the 2nd partition.
I searched for this solution a long time, so I thought I would share it "
Do you think this is worth trying ?