ext4, ntfs,exfat,fat32 for microsd card what should i use ? - General Questions and Answers

Hi my wonder is "can i use ext4 format for my SanDisk 64GB sdxc class 10 ?"to make it as a storage memory for miusc , images and videos. Or should i use the ntfs or exfat or fat32.
With thanks
Sent from my GT-N7100 using XDA Premium 4 mobile app

hi
deutsh said:
Hi my wonder is "can i use ext4 format for my SanDisk 64GB sdxc class 10 ?"to make it as a storage memory for miusc , images and videos. Or should i use the ntfs or exfat or fat32.
With thanks
Sent from my GT-N7100 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Hi,
Fat32 is universal partition for your music, ,video etc....
ext3 ext4 are used for android/unix/linux application storage...
be careful while partitioning you SD card...
read it before executing partiotion....
""forums.androidcentral.com/general-help-how/85809-tutorial-everything-you-wanted-know-about-app2sd-ext3-ext4-partitions.html[/url]"
-rkk

rkk253755 said:
Hi,
Fat32 is universal partition for your music, ,video etc....
ext3 ext4 are used for android/unix/linux application storage...
be careful while partitioning you SD card...
read it before executing partiotion....
""forums.androidcentral.com/general-help-how/85809-tutorial-everything-you-wanted-know-about-app2sd-ext3-ext4-partitions.html[/url]"
-rkk
Click to expand...
Click to collapse
Thanks for replying.
I don't want to partition the memory card i just want to format it as the best storage file system .
Sent from my GT-N7100 using XDA Premium 4 mobile app

hi
deutsh said:
Thanks for replying.
I don't want to partition the memory card i just want to format it as the best storage file system .
Sent from my GT-N7100 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
hi,
ok then use FAT32 is good enough for you...
-rkk

But think about the max. filesize with FAT32 (4 Gigabyte). If you don't want to use so large files, I would prefer FAT32 in all cases.

Good... But the question is : the ext4 working as fat32 as storage for files
Sent from my GT-N7100 using XDA Premium 4 mobile app

I think the best way is to try it, but I have read somewhere that ext should go, depending upon the android-version.
Accesing files via USB (in the phone) shouldn't be the Problem, but accesing via cardreader directly on windows did not (or rather not without special ext-drivers for windows).

Well, I think ext3 is the best option if you are going to have media files which are bigger that 4GBytes...

well... The other question is :what is the best for non-damage of microsd ?
I mean the card will minimize the ability to get a damage. What the file system type is best.?
Whith thanks
Sent from my GT-N7100 using XDA Premium 4 mobile app

hmmm, file system organization cannot damage your card, it is only a logic 1 or 0 on the electronics cells.
Maybe there is a difference between frequency of read/write operation. The more the bigger chance to damage a card... of course after a long, looooong time. I would recommend using ext3 as it's more scalable and stable than FAT32.
FAT32: File Allocation Table, 32-bit
Introduced: August 1996 (Windows 95 OSR2)
Directory contents: Table
File allocation: Linked list
Bad blocks: Cluster tagging
Maximum number of files: 268,435,437
Maximum file size: 4GB
Filenames: 8.3 or 255 characters, ASCII except for "'*/:<>?\|
Attributes: Read-only, hidden, system. volume label, subdir, archive
Ext3: Third extended file system
Introduced: November 2001 (Linux 2.4.15)
Directory contents: Table, tree
File allocation: Bitmap, table
Bad blocks: Table
Maximum number of files: number of bytes in volume/2^13.
Maximum file size: 16GB (1KB block) to 2TB (4KB block)
Filenames: 255 bytes long, all bytes except \0 and /.
Attributes: no access time logging, append-only, synchronous write, no-dump, h-tree, immutable, journal, secure-delete, top, allow-undelete.
Journal: metadata and file contents

There is no "best" filesystem, they are all optimized, to some extent, for different things.
Without lots more info, fat32 is relatively efficient and has far and away the best compatibility. For most users the compatibility makes it the winner.

Hi... I try the ntfs but.... But its incompatible with android.... So sad
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NTFS is an windows-filesystem, and is only write- and readable on windows. Yes. linux can read it, but needs secial drivers for that and isn't realy fast. It is the worst filesystem for android or linux.
Use fat32 and ready!
Its fast, its compatible, and can be used in/ with most devices. The only disadvantage for you will be the filesize-maximum (4 GB).

SaschaBr said:
NTFS is an windows-filesystem, and is only write- and readable on windows. Yes. linux can read it, but needs secial drivers for that and isn't realy fast. It is the worst filesystem for android or linux.
Use fat32 and ready!
Its fast, its compatible, and can be used in/ with most devices. The only disadvantage for you will be the filesize-maximum (4 GB).
Click to expand...
Click to collapse
O.K. I'll take your advice but I have a little question "how could I protect the micro sdcard from damage ? I suffered from a damge of micro sdcard several times.
Sent from my GT-N7100 using XDA Premium 4 mobile app

Until now I never had an damaged sd-card. And if it will happen, I have an backup of my important data. So I simply will buy a new one and play back this backup. Nothing is forever.
EDIT:
Ok, this 64 GB-SD-Cards are not realy cheap, but under normal conditions it won't faile for a long time, whatever filesystem you will use.

Thanks for everyone ....indeed
Sent from my GT-N7100 using XDA Premium 4 mobile app

rkk253755 said:
Hi,
Fat32 is universal partition for your music, ,video etc....
ext3 ext4 are used for android/unix/linux application storage...
be careful while partitioning you SD card...
read it before executing partiotion....
""forums.androidcentral.com/general-help-how/85809-tutorial-everything-you-wanted-know-about-app2sd-ext3-ext4-partitions.html[/url]"
-rkk
Click to expand...
Click to collapse
hey buddy,
can u tell me i going to partition of memory card for music nd video i'll use FAT32 but second partition what should i do..ext3 or ext4 i ma using motorola g3 stock android is supported ext4 partition on android 5.1.1 or not cz plz tell me .
thanks in advance

shailesh406 said:
hey buddy,
can u tell me i going to partition of memory card for music nd video i'll use FAT32 but second partition what should i do..ext3 or ext4 i ma using motorola g3 stock android is supported ext4 partition on android 5.1.1 or not cz plz tell me .
thanks in advance
Click to expand...
Click to collapse
Android supports Ext4 so I'd rather use Ext4 than Ext3

you can format it by Fat32

sharing and expecting to learn
Hi all,
I am wondering about the partitioning of my new external memory card manufactured by Samsung Electronics.
The very same manufacturer initially develop F2FS, the Flash Friendly File System for the Linux Kernel.
F2FS was expected to be the fastest F.S. for solid-state disks, eMMCs, and SD cards.
Initial tests confirmed it. Nevertheless posterior tests reveal that ext4 beats F2FS (...).
My guessing is that not enough research/test have been done in the matter.
Im going to set the following layout in order to test the speed for each partition:
1._ 34,7G EXT4 -> pictures, movies, backups, etc... AND/OR moved: APPs by hard/sym links; DATA by folder mount
2._ 65,0G FAT32 -> pictures, movies, backups, etc...
3._ 19,5G F2FS -> moved APPs by hard/sym links; moved DATA by folder mount
Depending on the results (specific for my phone and configuration) included in the reports from Antutu, A1SDBenmarch (possibly others too), I will most likely either:
1._ format whole microSD as F2FS -> roms,apps,data,pics,movies,etc; access using the phone (adb, usb, wifi)
2._ format whole microSD as EXT4 -> roms,apps,data,pics,movies,etc; access using any type of linux and many others
3._ format 32G as F2FS -> apps; format 64G as EXT4 -> roms,data,backups,movies; format 32G as FAT32 (any file smaller than 4G I want to be directly accessed from any device through any card reader using any OS)*
* I won't use fat32 as ext4 read/writes speeds are bit faster and i dont need to access the sd using any device
My goal is to format the external microSD card as F2FS and internal storage. F2FS is not only supposed to be better in performance but also it is supposed to expand it's lifespam
Note: Regarding partitioning the microSD in the computer, only linux will allow resizing F2FS filesystems; windows software doesnt recognize it yet, therefore it treats the partition as unformatted, neveertheless it's possible to move it.
Note2: there are programs that allow the user to mount linux partitions and read/write data on them.
Phone: Samsung Galaxy Note 3 SM-N9005, rooted, resurrection remix 5.6 (current,next5.8)
Card: Samsung EVO Plus 128Gb microSDXC UHS-I Class 10 U3 Card
ROM: Resurrection Remix v5.6 (Marshmallow)**
S.Soft: Apps2SDpro: Linked -hardlinks/symlinks- apps to F2FS partition on ext.SD. App data (TuneIn Radio recordings) moved -foldermount- to F2FS partition on ext.SD.
** I am currently designing the multiROM layout which will probably include the current ROM, plus Resurrection Remix v5.8 (Nougat) kali and some others
cheers

Related

[Q] What is the *best* sd filesytem for android?..

The only exp I've w/ android is using SD versions on my TMo HD2, &'ve always had my SD FAT32 formatted. I've heard of ext2, 3, & 4, but'm unsure of the differences, and was never really concerned, as my primary OS's always been Windows Mobile (which only supports FAT). Now, however, I'll be completely making the jump to android w/ my Galaxy S II, and would just like a li'l clarific8ion & recommend8ions regarding SD formatting for a performance whore, such as myself. I'm still using my WiMo tele until I sort these things out.
Thanks, e'rbody.
Fat is recognised by all OS's and ext 2 3 and 4 are not recognised by windows (not sure about Mac) but it is a default fs for Linux. Not sure what the other differences are other than that.
Sent from my R800x using XDA App
EXT4
- The ext4 filesystem can support volumes with sizes up to 1 exbibyte (EiB) and files with sizes up to 16 tebibytes (TiB)
- Extents replace the traditional block mapping scheme used by ext2/3 filesystems. An extent is a range of contiguous physical blocks, improving large file performance and reducing fragmentation. A single extent in ext4 can map up to 128 MiB of contiguous space with a 4 KiB block size
- The ext4 filesystem is backward compatible with ext3 and ext2, making it possible to mount ext3 and ext2 filesystems as ext4. This will slightly improve performance, because certain new features of ext4 can also be used with ext3 and ext2, such as the new block allocation algorithm.
So, go for EXT4
My advice is to make 2 partitions:
A Fat32 partition to keep media files so it can be recognized as external usb drive by windows
A ext4 partition where you would move all the apps you install (use link2sd or an application that does the same thing)
BazookaAce said:
... go for EXT4
Click to expand...
Click to collapse
Zmotocescu said:
... make 2 partitions:
A Fat32 partition to keep media files so it can be recognized as external usb drive by windows
A ext4 partition where you would move all the apps you install (use link2sd or an application that does the same thing)
Click to expand...
Click to collapse
w/ 16GB internal on my SGSII, I may not even need 2 app 2 sd, tho, huh? Anyway, thnx 4 the advice, guys. 1 last Q - should I use a swap partition, as well, & if so, y & what size (I've a 16GB Class 6 microSDHC, btw)?
Thnx again.
::bump::
Does any1 recommend a swap partition, y, & what size, is there a "card size":"swap partition size" ratio?

Partitioning SD card

Hi all,
Is it good to partition my SD card? What is positive and negative ?
Sent from my Desire Z using XDA
SonicSoul95 said:
Hi all,
Is it good to partition my SD card? What is positive and negative ?
Sent from my Desire Z using XDA
Click to expand...
Click to collapse
meaning what? swap and ext4?
swap reduces your sd battery life, but it's said that it's not very noticeable, and it's needed with sense 3.5
ext4 just adds space for apps on sdcard as if they were on phone's rom
I mean swap, sorry.
What do you mean with reduce? And how can i swap my sdcard? Can you post me a thread please ? )
Sent from my Desire Z using XDA
This will tell you everything you need to know to get started.
Okey thanks
Sent from my Desire Z using XDA
I just partitioned my MicroSD card with MiniTool.
First Partition: FAT
Second Partition: Ext2
My laptop recognizes the card through card reader and I can see the two partitions in MiniTool, but my phone (HTC Explorer) does not recognize it. Any suggestions?
Well how are you checking if your phone sees it. Some roms can't use sd2ext. Take a good file explorer like root explorer ans see if there's a folder names sd-ext
Sent from my HTC Vision using xda premium
sulehri said:
I just partitioned my MicroSD card with MiniTool.
First Partition: FAT
Second Partition: Ext2
My laptop recognizes the card through card reader and I can see the two partitions in MiniTool, but my phone (HTC Explorer) does not recognize it. Any suggestions?
Click to expand...
Click to collapse
I simply use the phone's recovery (in my case 4EXT) , which will walk me thru everything, I didn't bother with a swap partition but rather a dataswap option (specific to my rom), and a 2GB sd-ext (Again supported by default on my rom). And used 4EXT to convert all my internal file systems to ext4 filetype instead of ext3 (again my rom supports it, but not all roms do).
Essentially you can partition SD and most everything else via ClockworkMod or 4EXT.
PS: Generally sd-ext should be the FIRST partition. (or second in the case of swap, sd-ext and fat32), since some Roms will not automatically recognize it if not placed in that order. thus another reason to do it via recovery.
Use the recovery on your phone to partition your SD card then plug your SD card into a Linux box and check to see if it's EXT4 using Gparted.
how to get sd-ext before fat32 in 4ext?
kbeezie said:
I simply use the phone's recovery (in my case 4EXT) , which will walk me thru everything, I didn't bother with a swap partition but rather a dataswap option (specific to my rom), and a 2GB sd-ext (Again supported by default on my rom). And used 4EXT to convert all my internal file systems to ext4 filetype instead of ext3 (again my rom supports it, but not all roms do).
Essentially you can partition SD and most everything else via ClockworkMod or 4EXT.
PS: Generally sd-ext should be the FIRST partition. (or second in the case of swap, sd-ext and fat32), since some Roms will not automatically recognize it if not placed in that order. thus another reason to do it via recovery.
Click to expand...
Click to collapse
I'm running mimicry-1.4.0, 4ext touch, same as you. When I ask it to partition my new, 16gig, class 10 card, it asks:
size of first sd-ext, to which I reply 2048
size of second sf-ext, to which I reply skip
size of swap, which I also skip,
and then it does the remainder as fat32.
BUT...the fat partition is at the beginning of the card...not the order the app asked for my input...and I don't see how to change them.
Maybe not being first is okay with mimicry?
thanks for your help,
p-d
ps all my file systems are ext4 on the phone itself.
prairie-dad said:
I'm running mimicry-1.4.0, 4ext touch, same as you. When I ask it to partition my new, 16gig, class 10 card, it asks:
size of first sd-ext, to which I reply 2048
size of second sf-ext, to which I reply skip
size of swap, which I also skip,
and then it does the remainder as fat32.
BUT...the fat partition is at the beginning of the card...not the order the app asked for my input...and I don't see how to change them.
Maybe not being first is okay with mimicry?
thanks for your help,
p-d
ps all my file systems are ext4 on the phone itself.
Click to expand...
Click to collapse
you'll be just fine, this is normal
Sent from my HTC Vision using xda premium
demkantor said:
you'll be just fine, this is normal
Sent from my HTC Vision using xda premium
Click to expand...
Click to collapse
Older s2e may need a specific partition order but both clockwork and 4ext arrange in this order, and the enabler script in my signature needs no apps and works fine with mimicry.
Sent from my T-Mobile G2

**UPDATE** SanDisk 64GB Genuine micro SD Ultra Mobile class 10 SDXC

Hi Everyone
I bought the card mentioned below from ebay.
http://www.ebay.com.au/itm/28094386...X:IT&_trksid=p3984.m1497.l2649#ht_1906wt_1163
I have a couple of questions:
- Why is the transfer rate so slow when transferring files between computer and on to the SD card? It's like up to 2 MB/second.
- I used SDFormatter to format the card. The settings that I have used are Full Erase (Overwrite) and Flash Erase (OFF). When finished, I inserted the card and it's saying SD card damaged? I don't understand. Initially, I converted the file system from exFAT to FAT but the SDFormatter converted the file format back to exFAT.
Any help would be appreciated!
Thanks,
Sam
Format card in the phone. Mike
sp5it said:
Format card in the phone. Mike
Click to expand...
Click to collapse
I used SDFormatter while the card was in the phone but didn't help.
As Mike said format the sd card from the phone use the phone to do this in recovery mode
johnerz said:
As Mike said format the sd card from the phone use the phone to do this in recovery mode
Click to expand...
Click to collapse
Hi, Thanks for your prompt response - So, since now the partition is back as ex-FAT, I would have to convert to FAT and then format the card or would it convert to FAT when I format the card in recovery?
spuri78 said:
Hi, Thanks for your prompt response - So, since now the partition is back as ex-FAT, I would have to convert to FAT and then format the card or would it convert to FAT when I format the card in recovery?
Click to expand...
Click to collapse
Uhm, little question at this occassion cause I only know about FAT12, FAT16 and FAT32 (called vfat by linux when combined with long file names) so far -- what is ex-FAT?
But apart from that: formatting means writing a new file system to a block device [at least nowadays, in earlier times it could also mean write a new sector geometry on a harddisk]. So, it doesn't matter what flavour the old filesystem was.
Zirias said:
Uhm, little question at this occassion cause I only know about FAT12, FAT16 and FAT32 (called vfat by linux when combined with long file names) so far -- what is ex-FAT?
But apart from that: formatting means writing a new file system to a block device [at least nowadays, in earlier times it could also mean write a new sector geometry on a harddisk]. So, it doesn't matter what flavour the old filesystem was.
Click to expand...
Click to collapse
Some of the reading that I have done with regards to these new types of SD cards from Sandisk, ex-FAT file structure is what they come with and our mobile phones are not eqipped to handle this format so hence the need to convert it to FAT. Now what ex-FAT is, I'm not sure. I'm not at my PC so will have to do some more reading on that one.
Are you sure you actually have a 64gb class 10?
There are A LOT of fakes on ebay where they take a class 2 8gb card and put a class 10 64gb label on it. Most are good enough painted on labels that you cant tell.
They even partition the card with fake info so it says its got 64gb of space....though it fills up with 8gb.
Be very careful with those ebay cards.
Anyway, that might be the reason you are getting slow transfer speeds.
Sent from my HTC Sensation using xda app-developers app
If you can, go for Toshiba, the last time i heard most of the card are made by Toshiba, the other brands just slap a sticker onto it.
Zirias said:
But apart from that: formatting means writing a new file system to a block device [at least nowadays, in earlier times it could also mean write a new sector geometry on a harddisk]. So, it doesn't matter what flavour the old filesystem was.
Click to expand...
Click to collapse
Just wanted to add to this conversation, although you normally will not run into this format. Because of Windows Phone 7 on the HD2 I know about this. If the card is formated in a RAID format you will have do w low level format on the card first before you can format it fat anything. So yes rarely it does matter what "flavour" the old file system was. That it should be mentioned.
Skipjacks said:
Are you sure you actually have a 64gb class 10?
There are A LOT of fakes on ebay where they take a class 2 8gb card and put a class 10 64gb label on it. Most are good enough painted on labels that you cant tell.
They even partition the card with fake info so it says its got 64gb of space....though it fills up with 8gb.
Be very careful with those ebay cards.
Anyway, that might be the reason you are getting slow transfer speeds.
Sent from my HTC Sensation using xda app-developers app
Click to expand...
Click to collapse
Well, I got it from a Top ebay seller so I was hoping it'd be genuine. The space on my card when I first formatted said 59gb free.
Please advise what should I do? I will let seller know and see what happens?
Thanks,
I have one other question. I have found Patition Wizard by MiniTool and if I create a partition on the card as EXT4, will our sensation recognize the card?
I have created a partition on the sd card as FAT32 but the phone is still not recognizing the card. arghhh!
Zirias said:
Uhm, little question at this occassion cause I only know about FAT12, FAT16 and FAT32 (called vfat by linux when combined with long file names) so far -- what is ex-FAT?
Click to expand...
Click to collapse
http://en.wikipedia.org/wiki/ExFAT
Try using a memory card reader and the SDFormatter tool. Fat32, 32K clusters
spuri78 said:
Hi Everyone
I bought the card mentioned below from ebay.
http://www.ebay.com.au/itm/28094386...X:IT&_trksid=p3984.m1497.l2649#ht_1906wt_1163
I have a couple of questions:
- Why is the transfer rate so slow when transferring files between computer and on to the SD card? It's like up to 2 MB/second.
Thanks,
Sam
Click to expand...
Click to collapse
Most probably you got a low classed sd card and also try formate from your phone using any compitable file manager or using the phones builtin system.
And to test your sd card, google for "h2testw" and test your memory card.
arabi.theboss said:
Most probably you got a low classed sd card and also try formate from your phone using any compitable file manager or using the phones builtin system.
And to test your sd card, google for "h2testw" and test your memory card.
Click to expand...
Click to collapse
I can't format from my phone because it is not recognizing it and/or having issues with being mounted. Now, it's not even recognizing it when I put it in the adapter. The windows 7 format pop windows says 'Unavailable capacity'. I think it's ****ed Thanks, I'll search for the memory card tester.
Can someone please recommend me another one? 32/64GB. Maybe, I should get a 32GB since a lot of people are having issues with 64GB. The only reason I got 64 was that it was selling cheap. 32GB should be plenty for my needs.
se1000 said:
Try using a memory card reader and the SDFormatter tool. Fat32, 32K clusters
Click to expand...
Click to collapse
I have tried using SDFormatter with the memory card reader but it always changed the file structure back to ex-FAT, which is not compatible on Sensation.
@I got 64 was that it was selling cheap:
So tell me one thing, you will drive a Mercedes but you only will pay for a small Fiat?
I have an original Samsung 64GB Class 10 sd-card with no issues. They was not cheap at all.
Things you can do is:
a low level format to be shure..
- tool: HDD Low Level Format Tool 4.25 - www.hddguru.com
- that is the tool i am using for all my memory device since years
set up a new partion and format the sd-card..
- tool: EASEUS Partition Master 9.1.0 Home Edition - Free for Home Users - www.partition-tool.com
- that tool can format every type and size
Ok that all is running on my 2nd w7 pc. Not my favor OS
When this all is not working with your sd-card, then you have possiblea a fake card.
The low-level-format tool looks deeper then your windows property.
When you have a fake card the LLF tool will stop working after it has reached the max of sectors.
You could have got one from amazon thats what I did
Sent from my HTC Sensation 4G using xda premium

[Q] Partitioning MicroSD for Link2SD

What is the best way to create 2 primary partitions for using Link2Sd on a Samsung Galaxy Tab 2 7.0.
I have a 32 GB Micro SD card that needs the treatment.
Many thanks to all in advance.
Regards
Court
PS: I use mini tool home edition as a partitioning tool
which ROM ?
It depends on what ROM you are running. After trial and error ext4 was detected for my stock ICS and now works with CM10.1 too.
So partition it as 5 GB ext4 (more than sufficient ) and rest FAT. I too have 32 GB class 10 in this way via mintool partition.
PS: you cannot increase or decrease the size of ext4 using minitool once the partition is created. So plan properly while creating the partitions.
courtg9000 said:
What is the best way to create 2 primary partitions for using Link2Sd on a Samsung Galaxy Tab 2 7.0.
I have a 32 GB Micro SD card that needs the treatment.
Many thanks to all in advance.
Regards
Court
PS: I use mini tool home edition as a partitioning tool
Click to expand...
Click to collapse
Google "gParted Live" and you'll find the cd. You can create your partition of EXT3 or EXT4. You can resize the partition as well. There are YouTube videos to help you see how to do it.
I don't know why you'd want Link2SD. It will permit you to store the app, cache and davlik in the ext partition instead of in the /data on the deviice. You likely have adequate storage in that device partition for those items. I think you you would do better with swapping /mnt/sdcard with /mnt/ExtSdCard.
I actually have tried both together and found no advantage to the Link2SD.
king200 said:
Google "gParted Live" and you'll find the cd. You can create your partition of EXT3 or EXT4. You can resize the partition as well. There are YouTube videos to help you see how to do it.
I don't know why you'd want Link2SD. It will permit you to store the app, cache and davlik in the ext partition instead of in the /data on the deviice. You likely have adequate storage in that device partition for those items. I think you you would do better with swapping /mnt/sdcard with /mnt/ExtSdCard.
I actually have tried both together and found no advantage to the Link2SD.
Click to expand...
Click to collapse
brother i used minitool and its working perfectly with link2sd swapping is the thing of real developer but is the best option

[Q] Is fat32 the only filesystem supported for microsd?

I tried formatting to ext4 and the phone did not recognize the card. Just wondered if anyone else had sucessfully tried any other filesystems?
Right now 64GB microsd's seem to be the best deal and name brand versions can be found as cheap as $20-25 where 128gb cards will still cost you $70+ and usually involve rebates at the lower end prices.
Exfat and fat32. I have mine formatted to fat32.
Sent from my Alcatel OneTouch Idol 3 using Tapatalk
Applications that can write to SD card can only write to a SD card format to FAT 32. The system file manager can write to Exfat, but that's it.
Still not all apps will have permissions. I can't get Utorrent to save to the ext sd for anything
Sent from my 6045I using XDA Free mobile app
jvs60 said:
Still not all apps will have permissions. I can't get Utorrent to save to the ext sd for anything
Sent from my 6045I using XDA Free mobile app
Click to expand...
Click to collapse
Syncthing is the same way...you should still be able to use the kitkat workaround though which is to save your files to a folder under the android\data\<appname> folder on the sdcard since each app has access to it's own data area.
I never knew about this workaround. So i create the folders on my ext sd card?
Sent from my 6045I using XDA Free mobile app
jvs60 said:
I never knew about this workaround. So i create the folders on my ext sd card?
Sent from my 6045I using XDA Free mobile app
Click to expand...
Click to collapse
Try this: http://www.instructables.com/id/How-to-bypass-Android-44-KitKat-external-SD-write-/
damn... i'll try that
how come the sdcard can't be used for anything
camera 360 can't use it to save, there's no option to choose applications installation on sdcard ect.
had to use link2sd to move almost all my apps without error
seriously now...
keyra74 said:
damn... i'll try that
how come the sdcard can't be used for anything
camera 360 can't use it to save, there's no option to choose applications installation on sdcard ect.
had to use link2sd to move almost all my apps without error
seriously now...
Click to expand...
Click to collapse
It can be used if you are rooted...requires adding a line to platform.xml. If you find the thread about what camera software to use I posted some instructions on how to fix it where 3rd party's can use the external sd...or you can google on "platform.xml android external sd".
http://forum.xda-developers.com/showpost.php?p=62100041&postcount=37
famewolf said:
It can be used if you are rooted...requires adding a line to platform.xml. If you find the thread about what camera software to use I posted some instructions on how to fix it where 3rd party's can use the external sd...or you can google on "platform.xml android external sd".
http://forum.xda-developers.com/showpost.php?p=62100041&postcount=37
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Click to collapse
thx i used the goold old sdfix app. it's normally for kitkat and we have to use some trick like that on lollipop bad alcatel bad
keyra74 said:
thx i used the goold old sdfix app. it's normally for kitkat and we have to use some trick like that on lollipop bad alcatel bad
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Blame google, not Alcatel. The external sd card issue is due to Lollipop..
That app makes the same change...you can uninstall it after it modifies the file. Simpler for me to just edit the file and push the change.
I'm on exfat on a 64gb. Works fine.
The 200gb I had in my g3 worked just fine.
Just realized the card cost more than this phone...
scatoclysm said:
I'm on exfat on a 64gb. Works fine.
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+1
My 32 gb HDSC card came formatted with FAT32. I preferred ExFAT, so I reformatted the card using Disk Utility on my Mac. The Icon 3 didn't recognize it until I reformatted back to FAT32. Maybe I should have tried formatting it on a Windows machine. I may try a 64 GB HDXC card that probably comes formatted with ExFAT.
maigre said:
My 32 gb HDSC card came formatted with FAT32. I preferred ExFAT, so I reformatted the card using Disk Utility on my Mac. The Icon 3 didn't recognize it until I reformatted back to FAT32. Maybe I should have tried formatting it on a Windows machine. I may try a 64 GB HDXC card that probably comes formatted with ExFAT.
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Really not much of a benefit to exfat over fat32...especially if you set cluster size when formatting. I also read about some folks having permission issues writing to the exfat till they reformatted. The samsung 128GB I put in my idol3 worked like a champ.
NooB....Thank Google lollypop for sdcard problems. U can write to sdcard with some apps not all if the code is written for this.
It seems TWRP doesn't recognise exfat partitions if the sdcard doesn't contain a partition table (GPT works, I haven't tried old-style msdos partition table).
This could be partly explained by the fact that, without a partition table, the external sdcard is called /dev/block/mmcblk1 instead of /dev/block/mmcblk1p1
To put it another way, if you want your sd card to be both readable when the phone is normally booted AND when it's booted into TWRP, you have to make a GPT table on the sdcard, and create an exfat partition inside.
=> In windows, it just fell into place after messing around with it for a bit. Your mileage will vary, depending on if you had an msdos partition table, a pre-existing GPT partition table (easiest) or no partition table at all. I gave up trying to figure it out.
=> Under TWRP adb shell, using the image containing gdisk, I did it this way (data-destructive operation !) :
- Use gdisk to create a new GPT table on /dev/block/mmcblk1 (or /dev/sdX outside from adb shell)
- Also with gdisk, create a new partition (types 8300 or 0700 should do) on the device targeted previously
- Then, exit gdisk and use "mkfs.exfat -n extsd /dev/block/mmcblk1p1" (or /dev/sdX1 if you didn't do it from TWRP adb shell) to reformat the partition created previously to exfat format.
However => do NOT use mkfs.exfat command on the /dev/block/mmcblk1 device (or /dev/sdX), else you'll have to redo step 1 again
Also, under adb shell, make sure you don't accidentally wipe /dev/block/mmcblk0 device, else you'll brick your phone !
I hope this helps a few people
DarkZell666 said:
It seems TWRP doesn't recognise exfat partitions if the sdcard doesn't contain a partition table (GPT works, I haven't tried old-style msdos partition table).
This could be partly explained by the fact that, without a partition table, the external sdcard is called /dev/block/mmcblk1 instead of /dev/block/mmcblk1p1
To put it another way, if you want your sd card to be both readable when the phone is normally booted AND when it's booted into TWRP, you have to make a GPT table on the sdcard, and create an exfat partition inside.
=> In windows, it just fell into place after messing around with it for a bit. Your mileage will vary, depending on if you had an msdos partition table, a pre-existing GPT partition table (easiest) or no partition table at all. I gave up trying to figure it out.
=> Under TWRP adb shell, using the image containing gdisk, I did it this way (data-destructive operation !) :
- Use gdisk to create a new GPT table on /dev/block/mmcblk1 (or /dev/sdX outside from adb shell)
- Also with gdisk, create a new partition (types 8300 or 0700 should do) on the device targeted previously
- Then, exit gdisk and use "mkfs.exfat -n extsd /dev/block/mmcblk1p1" (or /dev/sdX1 if you didn't do it from TWRP adb shell) to reformat the partition created previously to exfat format.
However => do NOT use mkfs.exfat command on the /dev/block/mmcblk1 device (or /dev/sdX), else you'll have to redo step 1 again
Also, under adb shell, make sure you don't accidentally wipe /dev/block/mmcblk0 device, else you'll brick your phone !
I hope this helps a few people
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Or just keep it formatted as fat32 and skip the above which was my choice.
Just my two cents - why would you want to format SD to ext4? Journaling filesystems don't work very well with flash drives, cells die much quicker.

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