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I've tested two sandisk class 4 SD cards.
If I format it to fat32 and partition the space(to use link2SD), my phone refuses to use the SD card and says it's not there. I use minitools for partition and the official SD card maker software for formating. I did everything by the book and tried multiple options(different labels, ntfs, ext2, etc.)
A fresh, unallocated space card works perfectly fine however.
My phone is rooted and unlocked bootloader running softMIUI rom with a modfied power saving blend kernel.
Please help! This is confusing the hell out of me.
Was looking at your post and I decided to grab a few of my MicroSD card 1gb, 2gb, 4gb, 8gb and 16gb....
I formated all of them on windows .... right click format, all default settings... Fat32. These are MicroSD cards that have had information on them... they all run fin on my arc. All different brands.
This leads me to believe that there's possibly either something wrong with the MsD card or the reader on the phone.
fluxgfx said:
Was looking at your post and I decided to grab a few of my MicroSD card 1gb, 2gb, 4gb, 8gb and 16gb....
I formated all of them on windows .... right click format, all default settings... Fat32. These are MicroSD cards that have had information on them... they all run fin on my arc. All different brands.
This leads me to believe that there's possibly either something wrong with the MsD card or the reader on the phone.
Click to expand...
Click to collapse
Solved it
Did this:
Changed the partition id to this:
"0*06 fat16,greater than 32 mb"
and made the second partition fat32 as well.
Removed the 100mb linux swap file partition I created....not sure if that was necessary.
I have a Sandisk Ultra SDXC 64GB Class 10 UHS-1 Micro SD card in my T999 T-Mobile Galaxy S III phone.
The card has become "damaged" (Samsung's term). 4 times now. Please note that the card works fine on my Window 7 PC. This last time I formatted the card in the phone, put the card in the PC, copied a bunch of files to it (about 3GB) and then put the card back into the phone. And the phone said that the card might be damaged. I was sure to unmount the card before removing it.
I called T-Mobile tech support and they know nothing about it.
I called Sandisk and they said "There are known problems with Samsung Phones and Tablets and Sandisk Class 10 cards. Samsung is aware of this and working on it. Would you like us to replace your Class 10 UHS-1 card with a Class 6 card?"
I called Samsung tech support and they know nothing about it and are not setup to tell their engineers about issues. The only way to report an issue to engineering is via email.
Let's make a loud stink about this so Samsung/T-Mobile will fix it.
Follow up on original post:
I went out and purchased the recommended Sandisk 64 GB SDXC Class 6 memory card and the problems are exactly the same as with the Class 10 card.
The problem seems to appear when there is more that 4GB (I'm not sure if it is exactly the 4GB barrier or not) on the card the Galaxy S III has a problem mounting the card. Note that once the card has gone greater than 4 GB even deleting files to reduce it below 4 GB does not allow the card to be mounted.
On the class ten card I was able to successfully run the fsck -t exfat command on the card that Android would not mount. fsck returned no errors or problems found.
My testing is rather limited but I can say: The T-Mobile Galaxy S III (T999) does not work correctly with SanDisk Ultra 64 GB SDXC memory cards (class 6 or Class 10)
Please, let's spread this around so that maybe Samsung, T-Mobile and SanDisk will learn how to work together and solve the problem for the sake of their customers.
I put the new card in the phone and formatted it in the phone.
I don't quite understand how you got 2 crap microsd card, I'm using a Samsung ultra 32gb class 10 just fine, never had one problem mounting it never seen one error message. Sorry
Sent from my SGH-T999 using xda premium
achmedclaus said:
I don't quite understand how you got 2 crap microsd card, I'm using a Samsung ultra 32gb class 10 just fine, never had one problem mounting it never seen one error message. Sorry
Sent from my SGH-T999 using xda premium
Click to expand...
Click to collapse
I think it is a software problem with the 64 GB Micro SDXC Card.
I have a Sandisk Ultra SDXC 64GB Class 10 UHS-1 in my Galaxy SIII and have never had an issue. I had problems formatting the card in my PC, So i just threw it in the phone and formatted it there. It was formatted and I have loaded about 25gb of music, 5gb of pictures through Cheetah Sync without issue.
picachux said:
I have a Sandisk Ultra SDXC 64GB Class 10 UHS-1 in my Galaxy SIII and have never had an issue. I had problems formatting the card in my PC, So i just threw it in the phone and formatted it there. It was formatted and I have loaded about 25gb of music, 5gb of pictures through Cheetah Sync without issue.
Click to expand...
Click to collapse
Have you rebooted your phone or unmounted and remounted the card? That is when the problems occur.
I believe that there is a bug in the code the Samsung uses to check the card prior to mounting. They are doing more than just a simple
fsck -t exfat.
I tried a 32 GB SDHC Samsung Class 10 card with the exact same data that was on the 64GB SDXC card without any problems. It is my belief that there is a bug in exFAT code in the Galaxy S III.
Thanks for your comments.
I have only unmounted the card twice to kickstart the media scan after loading some music and I reboot my phone every 2 days or so.
ChitownWingMan said:
Have you rebooted your phone or unmounted and remounted the card? That is when the problems occur.
Click to expand...
Click to collapse
I've reboot my phone all the time—I don't have any problems. I don't mount/unmount very often, but just tried it now and everything appears to be fine.
My card is a 64 GB class 5 SanDisk, formatted FAT32 (done on a Linux machine).
tamasrepus said:
I've reboot my phone all the time—I don't have any problems. I don't mount/unmount very often, but just tried it now and everything appears to be fine.
My card is a 64 GB class 5 SanDisk, formatted FAT32 (done on a Linux machine).
Click to expand...
Click to collapse
I believe the bug is in the exFAT drivers in the S III.
I formatted the card in the S III under the mistaken assumption that the phone would know best.
The theoretical maximum size of FAT32 is 2TB. However, since Microsoft in their infinite wisdom decided only to support FAT32 up to 32GB (most likely to force people to use NTFS) support for FAT32 above 32GB is spotty and unreliable.
This being said if you format a 32GB card or smaller in the Galaxy S III, it will be formatted FAT32. If you format a 64GB (or greater I presume) in the Galaxy S III, it will be formatted exFAT.
I will try formatting the card as a 64GB FAT32 partition. However, this will mess up my using a USB 3.0 card reader (at 5Gb/S transfer rate) to write to the card. Writing to the card via WiFi is interminably slow by comparison.
Sounds like windows is damaging the exFAT partition when you plug it in to your computer to transfer stuff. I've never done that because I just use Cheetah Sync to sync my iTunes(25gb) folder to my sdxc card and to sync my pictures/videos from the sdxc to my pc.
ChitownWingMan said:
I believe the bug is in the exFAT drivers in the S III.
Click to expand...
Click to collapse
Seems that way to me too. exFAT is not in Linux upstream, so I imagine Samsung just bought a binary driver from someone. Who knows the quality.
I will try formatting the card as a 64GB FAT32 partition. However, this will mess up my using a USB 3.0 card reader (at 5Gb/S transfer rate) to write to the card. Writing to the card via WiFi is interminably slow by comparison.
Click to expand...
Click to collapse
What does the card reader have to do with it? I've a USB 3.0 card reader, and my 64 GB FAT32-formatted fine.
As I recommended in the other thread, use a Linux Live CD to format your SD card.
tamasrepus said:
Seems that way to me too. exFAT is not in Linux upstream, so I imagine Samsung just bought a binary driver from someone. Who knows the quality.
What does the card reader have to do with it? I've a USB 3.0 card reader, and my 64 GB FAT32-formatted fine.
As I recommended in the other thread, use a Linux Live CD to format your SD card.
Click to expand...
Click to collapse
or use Partition Wizard Home Edition (free)(windows) for large fat32 format jobs works perfectly and the price is right http://www.partitionwizard.com/free-partition-manager.html
picachux said:
Sounds like windows is damaging the exFAT partition when you plug it in to your computer to transfer stuff. I've never done that because I just use Cheetah Sync to sync my iTunes(25gb) folder to my sdxc card and to sync my pictures/videos from the sdxc to my pc.
Click to expand...
Click to collapse
Because I thought the same thing one of the tests that I performed was to never remove the card from the phone. I did all of my copying to and from the card via File Expert Web Sharing. One day I ran the phone battery down and the phone rebooted. When it came back up it was unable to verify the card. However, fsck -t exfat found no problems with the card.
One interesting point, I was using Cheetah Sync (a great program) last night to copy a TitaniumBackup directory to the phone and it failed. Here is a copy of the email I sent to the developer:
The destination directory contains 11,841 files totaling 2.93GB and Cheetah needs to download 1917 files and is failing on the 1st file with the error "Sync Error - I/O error downloading files.".
Note: Cheetah Sync had already copied almost 7,000 files. It originally failed during a copy of almost 9,000 files. I restarted
the sync and that is why it failed on 1 of 1,917 files.
I am using a T-Mobile Galaxy S III (Model SGH-T999) with 32 GB internal memory and a 32 GB external SD Card (Samsung Class 10).
The source directory is c:\phone\card_backup\TitaniumBackup and the destination directory is /mnt/extSdCard/TitaniumBackup.
I am able to manually create a file in that directory using a file explorer.
tamasrepus said:
Seems that way to me too. exFAT is not in Linux upstream, so I imagine Samsung just bought a binary driver from someone. Who knows the quality.
What does the card reader have to do with it? I've a USB 3.0 card reader, and my 64 GB FAT32-formatted fine.
As I recommended in the other thread, use a Linux Live CD to format your SD card.
Click to expand...
Click to collapse
The card reader is not the issue just the mechanism to allow me to copy files quickly from/to the card.
How Windows will handle a FAT32 partition greater than 32GB is my concern. In the past I have always used NTFS for drives/cards greater than 32GB because FAT32 has a 4GB - 1 file size limit and I have many video files that are larger then that.
MiniTool Partition Wizard and Easeus Partition Master can both also make a 64GB FAT32 partition.
Thanks...
Update
There is an update to this thread here:
http://forum.xda-developers.com/showpost.php?p=29904990&postcount=10
Like the title says, When I bought my microSDcard and inserted it in my N7105, it worked fine for a couple of weeks. But all of a sudden it appears" Blank sd card or has unsupported file system". Yes, I thought it was my phone's problem, I tried to format the card in my N7105, but it did not work( tried to unmount and mount but also failed). So i put the card in a card reader and plugged into computer trying to format it in my computer. But as u can see, Failed. I've tried different applications to see if i can solve it, like Guiformat, SDformatter(v3.1, v4.0), Formatting it through Disk Management and H2testw(v1.4), All of them are failed.
Please, i just want my 32gb sdcard come back
i.imgur.co m/ddWil6q.jpg
(sorry the forum is preventing me post outside links so please remove the spacebar from the link above)
Push
push
is there no one have the same problem like mine
some of us are having a problem with sandisk ultra sd cards 32gb/64 gb...they are working good for 2-3months and suddenly you get these problems...dont know if it is due to custom kernel or due to manufacturing problems on san disk ....
some say on touchwiz roms, you need exfat formatting and on aokp and CM roms you need fat32 because the custom kernels dont recognise exfat formats
all i can say is try to format the card inside phone or use stock kernel and see
Fill no more than 16 gb on your SanDisk ultra sdhc 32gb card. ..solved the issue for me. ..( I also formatted the sd card in phone)
The phone also formats the sd in fat32 format
On omega v12
scribbled from my note 2 (N7100)
I just purchased a new 64GB SanDisk SDSDQX-064G-A46A micro SDXC card from Newegg:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820171773
The card works fine in my S3 and in my PC, but it will not mount in my S4, not even from Clockwork Recovery. Both my S3 and S4 are running the stock ROM, but the S4 is rooted where the S3 isn't. I went to the local T-Mobile store and while they didn't have an S4 to test my new card in, they did have a Note 3 which mounted my new card just fine. Additionally the 32GB card that was in the Note 3 mounted just fine in my S4.
What is going on here?
Format the card to Fat32 on your PC and see if that works.
dynospectrum said:
Format the card to Fat32 on your PC and see if that works.
Click to expand...
Click to collapse
There is no option to format to FAT32, only exFAT. Additionally, from what I read here Windows cannot format FAT32 volumes lager than 32GB.
http://www.ntfs.com/exfat-comparison.htm
A bit more reading and it seems the kernel that removes the SetUID restriction causes issues with exFAT formatted cards. Thankfully the fix is easy, just needed to install this exFAT module from recovery. The entire process is described here.
re: fat32 formatter
typoknig said:
There is no option to format to FAT32, only exFAT. Additionally, from what I read here Windows cannot format FAT32 volumes lager than 32GB.
http://www.ntfs.com/exfat-comparison.htm
A bit more reading and it seems the kernel that removes the SetUID restriction causes issues with exFAT formatted cards. Thankfully the fix is easy, just needed to install this exFAT module from recovery. The entire process is described here.
Click to expand...
Click to collapse
Here is a free windows utility which will format any size sdcards using FAT32.
Give it a try. Here is the direct download link: http://www.ridgecrop.demon.co.uk/download/fat32format.zip
Good luck!
typoknig said:
There is no option to format to FAT32, only exFAT. Additionally, from what I read here Windows cannot format FAT32 volumes lager than 32GB.
Click to expand...
Click to collapse
There's plenty of software to format the 64gb card to Fat32. I'm running a 64gb card in Fat32 format right now.
☞ Sent from here☜???
shouldnt need to format to fat32 i have 2 diff sandisc 64g cards in tmobile s4's and they are exfat and work fine.. are you sure you are on stock kernel.. if you change it lots of kernels do not work for exfat.
I found guiformat made mine work. Same card and I was having issues, too.
Dear Brainaics
I've got an issue,
My sd card is 64 gb sandisk class 10
I was using Pro Bam android 4.4.1 on my n7100
So I formatted my memory card within the rom.. It was fat 32 or ntfs
Later I got some issues with the rom, So I installed the stock rooted rom.
Ever since that I've been getting an unsupported file system.
Format Card - It shows formatting - then unsupported file system error - This goes on and on.
So i tried mounting it in Linux Ubuntu & try to format using gparted & terminal.
My data is there.. The card reads & all.
But I can't format it.
These are all the steps i've taken, I even tried sd formatter I got somewhere from xda!
Any useful info would be greatly appreciated by me offcourse mentally.
I mean i crave for knowing the reason behind this anomaly!
Have a good day...
Cheers
Can you delete any files on the card? I had a 64gb SanDisk card that had all my data but I couldn't format it, copy files or delete files from it, either on my phone or laptop.
SanDisk replaced it for me as it had developed a fault.
sent from somewhere