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formating external SD in ext4 ?

Hi !
I just installed the Lag Fix in my Samsung Galaxy S GT-I9000B and looks like it is fine.
As far I understand, the lag fix patch formats the internal SD as ext4 to have more stability and speedy.
So I am wondering if the external SD card would have similar benefits if I format it as ext4 too.
I don't have a spare external SD to check it my myself, so if anyone could provide any information, would be nice.

late but
Hi
I have an external sd card and i want to have a second partition in ext4, to put somme date on it (larges files)
i read and test since 15 days and what i can said is
you need to have a first partition (primary in fat32 on the sd card)
the second partition in ext4 is not seen by android os !!! I mean, there is no way to mount automaically these partition at boot and use it.
I have found a old lagfix from mimocan which mount external ext4 , but it is to store applications as we do in sdcard. I do believe we can use for data but it is old now we have kernel and rom with ext4 in native mode and i don't find how use ext4 on external card for data instead of program (with link2sd for exemple)
link2sd or app2sd only works with internal sd card !
regards

[Q] Problem with ext4 partition on my memory card

I have kingston 32gb memory card, class 6.
I maked 30gb fat32 & 1gb ext4 partition through gparted.
Everything seems to be ok. But it's not. Ext4 is not working. Like it's invisible.
When i refresh memory card I get some error sign near ext4 partition, and when i click for more information:
Anyone knows where problem might be?

anyone with solution?

**added picture to 1st post**

hi
looks like you want to do the same thing than me but ... as i learn at this time, there is no way to use ext4 partition on external sd card, just with some tools on internal sdcard.
android doesn't have script and code to mount under /mnt ext4 partitons just FAT32 !!!!!!!! great

[Q] Link2SD and Partitions

I have an HTC Hero rooted with stock 2.1 firmware
I installed Link2SD and read through the development post on this forum but encountered and issue I cannot figure out how to resolve.
I reformatted my SD card with 2 primary partitions using MiniTool. I re-sized my standard partition to allow for an additional 400MB partition then formatted the unallocated memory to ext3 format.
So now I have 2 partitions that look like this in MiniTool (4GB SD card):
Partition FileSystem Size Status Type
-SDCard FAT32 3.30GB Active Primary
-AppsPartition ext3 400.06MB None Primary
(sorry cant get more spaces between words, dont use forums often)
I thought that was all I needed to do but when I put the SD Card into my Hero it just tells me I have a damaged SD Card. What do I do to fix this?

I just wanted to say I figured this out on my own. I don't know what the problem was but I reformatted the SD card from the Hero and it only formatted the SDCard partition and then I had to reformat the AppsPartition to FAT32 file system in order to be usable by link2sd and it worked.
No idea what caused the problem to begin with but got it resolved, that's all that matters right?

I had problems too until I formatted partition 1 as FAT (aka FAT16 - NOT FAT32), and the second as FAT32 or Ext2/3.
The key for me was the first partition being FAT.

How to Use EXT3 Filesystem For The SD-EXT Partition??

"Use EXT3 Filesystem For The SD-EXT Partition,To Avoid Any Errors While Backup" Thiz is the suggestion from developer. But I dont know how to do this
please help:
here original topic: http://forum.xda-developers.com/showthread.php?t=1859518

After you create a partition, it needs to be formatted to be usable. If you created the partition on your SD card by putting it in your computer, you have to format it separately. You use your preferred software to format, and you must specify how you want the new partition formatted.
If you create a partition on your SD card through your phone's recovery (i.e., CWM), it will automatically format it. I think CWM uses ext4 by default.

post-mortem said:
After you create a partition, it needs to be formatted to be usable. If you created the partition on your SD card by putting it in your computer, you have to format it separately. You use your preferred software to format, and you must specify how you want the new partition formatted.
If you create a partition on your SD card through your phone's recovery (i.e., CWM), it will automatically format it. I think CWM uses ext4 by default.
Click to expand...
Click to collapse
Does CWM support external SD card formated with ext3 or ext4? I considered exFAT and NTFS but none seems to be supported by CWM.

CWM can read partitions which have been formatted ext2/3/4 in your computer. I'm not aware about exFAT, and I highly doubt any recovery would recognize NTFS.

SD Card - partition problem / 1st partition FAT is not mounting, only 2nd ext2 works

Hi @all.
I wanna use Link2SD to increase the device storage.
I tried thousands of tutorials to partition the SD-card with all possibilities (as recommended 1st primary FAT32 and 2nd primary ext2/3/4)
Finally Link2SD works with the 2nd partition and is able to link the apps to this partition, BUT my phone does not find the first partition FAT32 anymore and is not able to mount it. Even in link2sd it only shows partition 2 available, and the first one not.
I have a 32GB card and tried FAT32 - 20GB & EXT2/3/4 - 10GB but also FAT32 - 28GB & EXT2/3/4 - 1GB - nothing worked.
only when there is just one partition with FAT32 and whole 32 GB at all than the phone mounts the sd-card
I tried also with a smaller 8 GB card, still the same.
It is nice that link2sd works now after rooting and also using the rootfix and Init.d Toggler (to not have the bootloop anymore), but the only problem is that I cannot use the bigger part of the sd-card for normal files.
Anyone got solving ideas for this problem? big thanks in advance

Solution
Some SD cards after creating two partitions, the first partition cannot be mounted.
The second partition, used in Link2SD, works fine.
So you'll need to format the first partition -and ONLY the first- to NTFS filesystem.
Also you will need "Paragon UFSD Root Mounter":
https://play.google.com/store/apps/details?id=com.paragon.mounter&hl=en
After you install the app, run it. it should mount the new NTFS partition and it will be totally usable in the system.
Click to expand...
Click to collapse
Thanks to user DJPRMF for this method